How can we show there are lots of different kinds of coaches and that players develop in different ways? Some of this analysis can only come from somebody who has coached a lot of kids. I'd be super curious how differently someone who has coached high school or college would advise the development of existing games, if they had the chance. I bet they'd change things a lot.
When building on years of simulation playing for 30+ years across sports and extending them through mods and things, you start to develop strong opinions on what should be done differently. That's made a lot of sense in this tennis sim, where since my last post, I've gone back and added things that I once rejected like JV tennis and giving coaches access to helping players get better in specific attributes.
What follows is a lot of synthesized reports from my various AARs that I have my agents build on each new development run. Given this tool has no audience and is currently only running on my local machine, I'm only posting this for myself as a public record. At some point, I'll come back and parse more of it, but...I'm generally pretty happy with the under the hood decisions I made which are borne both from running over 100 years of sims.
Adding JV tennis was something I initially rejected, but I found there were too many kids never playing a match over 4 years and I decided it was bothering me. After running massive transfer portal for them, it was still not doing what I wanted. So I created a JV circuit and copied what Colorado does where huge tennis programs run multiple Varsity teams that play smaller schools JV/Varsity teams to give kids experience.
Modeling this is an incredible feat for me, personally.
The implemented JV format adapts to the smaller available lineup, beginning at one singles and two doubles flights. JV subsequently gained 128-entry individual singles and doubles State tournaments and a 36-team championship with twenty regional champions and sixteen at-large teams. The at-large selection combines 30% JV record and 70% varsity regular-season record. Sixteen at-large teams play a Parastate round; eight advance into the 28-team main draw.
Deep programs can also field V2 and V3 squads against other schools’ varsity teams. An initial 396-program girls test had 31 V2 teams and fourteen V3 teams. Their 220 duals against varsity opponents produced 95 squad victories. The association now applies a combined 24-date regular-season limit across varsity, JV, V2 and V3.
These additions expand the player's exposure history. The development odometer already gives a JV appearance half the value of a varsity appearance and uses participation to help determine how much of an individual's available development is realized. The competition layer supplies the matches recorded by that measure.
ATTRIBUTE DEVELOPMENT: WHAT THE STAFF CAN TEACH
The new coaching system allocates additional developmental capacity across 51 player attributes. Eight coached families cover serve, return, baseline, net, movement, touch, physical and mental skills. A ninth group of intangibles remains on the natural-development path.
Each player receives trainability and receptiveness by category, a work-ethic score, a natural target, trainable ceilings and finite additional stock. Coaches receive teaching portfolios according to their specialties. Singles coaches emphasize baseline, serve and return; doubles coaches emphasize net, touch and return; practice and tactical specialists have their own categories. Each coach's quality and fit affect the instructional offers that reach a player. Overlapping offers have diminishing returns. Credited gains land in individual attributes consumed by the match engine.
The implementation AAR includes a controlled three-season replay of 67 players from twelve girls' programs. Player profiles and exposure were held constant while coaching staffs changed.
The complementary elite staff produced a 90th-percentile gain of 5.65 additional OVR, compared with 4.91 for four overlapping elite coaches. Removing one coach at a time from the complementary staff reduced mean improvement by 0.70 for the head, 0.64 for the singles assistant, 0.37 for the doubles assistant and 0.45 for the tactician. The comparison makes assistant contributions and staff composition measurable.
These are synthetic matched-player results. The 2112 archived cohort is only beginning to accumulate comparable instruction.
COACHING DEVELOPMENT
Bond records a head coach's competitive achievements and program history. The game scores the five previous completed seasons with recency weights of 1.00, 0.80, 0.60, 0.45 and 0.30. The resulting score becomes a modest multiplier on the staff's attribute-teaching offers entering the next season. Teaching specialty and technical quality remain separately recorded coach attributes.
The annual score awards up to twenty points for winning percentage, up to ten positive or negative points for year-over-year change, twelve for a district title, five for each Road-to-State unit title, one State finish tier, eight for a Tournament of Champions title, and up to eight for consecutive head-coaching seasons at the school. The highest State tier applies once. A coach's archived full-season record supplies the winning percentage. Program identity links years even when school names or head coaches change.
The five-year average is referenced against 16 points, scaled over 45 and shrunk toward neutral when history is limited. The configured multiplier band is 0.85–1.15.
THE COACHING BOND ANNUITY
A head coach older than forty who has completed ten consecutive seasons at the same school qualifies for the bond annuity. From season eleven onward, successful seasons receive 25% additional reputation points on positive achievements. Ordinary .500 winning-percentage credit and tenure points are excluded from the supplement. Moving to another school restarts the local qualification period; earlier career results remain in the coach's record.
For an eligible coach finishing .600, winning a district and earning two Road-to-State unit titles, the supplement is:
25% × (2 points above .500 + 12 district points + 10 unit-title points) = 6 additional reputation points.
Positive year-over-year improvement and State results can increase that amount. The award affects subsequent bond calculations.
A separate rule applies to development-oriented coaches aged 55 and older. Their earned bond has a floor of 1.0 and retains at least the previous archived head-coaching bond. This protection applies to specified teaching-oriented profiles or coaches with Development quality of at least 0.75. It can continue across a move to a struggling program. A coach may qualify for the annuity, veteran protection, both, or neither.
DEMO DATA
The first research export records 1,962 active head-coach seasons: 960 boys and 1,002 girls. The overlap of the two protections is shown below.
There were 489 annuity-eligible heads, 655 protected veteran development heads and 182 satisfying both conditions. A positive annuity supplement had been earned in the most recent completed season by 452 heads; 429 remained eligible entering 2112 and 23 had changed circumstances since the qualifying season.
The mean entering bond was 1.0269, the median 1.0059 and the observed range 0.9638–1.1071. The relationship between current-program tenure, bond and the 2112 team record is visible in the next table.
There were 116 heads at the observed maximum of 1.1071, including 88 annuity holders. The five-season shrink factor limits the ordinary positive multiplier to about 1 + 0.15 × 5/7 = 1.1071. Further achievements can increase earned reputation points while leaving the teaching multiplier at that plateau. This is an open calibration question in the AAR.
The coaching records also show distinct careers. Maxwell Salama entered 2112 at Southern Pacific Tech with eighteen completed head seasons and bond 1.1031; the team finished 0–21. Lilly Flores entered with bond 1.0967 after eighteen seasons at Chickasaw; its girls team moved up a class and fell from 25–8 to 5–18. Both had annuity and veteran protection. Owen Gibson entered Millworks' season at age 35 with four completed head seasons and bond 0.9833, then coached a 24–6 team to its first State title. That result enters a subsequent bond calculation.
Realignment also matters to this formula: 318 boys and 332 girls programs moved class. Programs moving up lost roughly eight to ten winning-percentage points on average, and those moving down gained around eight to nine. A .600-to-.500 change subtracts five bond improvement points through the current rule. Class-relative improvement is identified in the research report as a metric to evaluate alongside the implemented score.
PLAYER DEVELOPMENT: HISTORY AND FIRST STOCK COHORT
The older natural-development model has a substantial career history. The 2110–2111 study followed 925 early participants from seventh grade to graduation. Median current ability moved from 25 to 51, with a median gain of 22 OVR. Its upper tail is shown below.
Lamont Schultze's six-year career at Granite Basin went from 29 OVR in seventh grade to 100 as a senior, after an early event raised the latent ceiling from 74 to 99. That result belongs to the pre-stock natural-development and maturity system. Its long history provides a benchmark for evaluating future coached-stock careers.
In the 2112 export, 15,284 of 58,444 players carry the new stock profile. Of those, 14,087 are ninth-graders. Only 44 players, with prior early participation, have recorded coached gains. Their 877 instructional attempts produced 427 landed results, 346 declines, 103 below-floor outcomes and one capacity block. Credited raw attribute points total about 464; the final attribute profiles reflect essentially the same gains within export rounding. Recorded additional weighted development totals approximately 10.416 OVR across the 44 players.
The entry cohort raises a second calibration question. Among 14,087 stock-era ninth-graders, work ethic and available additional coaching budget correlate at approximately −0.405. The rare high-effort/high-headroom combinations are counted below.
The median spendable additional coaching budget is 7.864 OVR; the 90th percentile is 13.302. These are capacities available across a career. Their actual realization depends on teachers, receptiveness, exposure and remaining room to improve. The 2112 export begins the observation period.
LONGITUDINAL TEST
The current ninth-graders reach senior year in 2115; seventh-grade entrants reach it in 2117. Future exports can join players by player_id, teaching activity by historical coach_id and program histories by permanent program identity. This preserves which coach actually taught each skill, the head coach's entering-season bond, and the player's natural and coached gains.
The research questions are concrete: how much additional skill does a low-win development specialist produce; how do complementary staffs affect different attribute groups; how does the annuity change the bond of a long-serving program builder; and how often does a low-skilled freshman develop into a strong varsity or State singles/doubles competitor? The reports establish the baseline and the calculations needed to answer those questions across future seasons.
SOURCE REPORTS
Combined 2112 coaching/development research
Bond and annuity implementation AAR
Attribute-development implementation and matched-staff replay