Mark Kotsay

Decision cost by category

Record

48-70

wins-losses

Games

153

with decision data

Lineup

4.34 R 0.04 R/G

Bunts

2.24 R 0.02 R/G

IBBs

3.29 R 0.03 R/G

Relievers

21.64 R 0.18 R/G

Season to date · categories cover different scopes and aren't summed into a total — reliever selection is high-leverage spots only; the Relievers leaderboard shows a rolling 30-day window.

Cost by category

Oakland Athletics cost themselves 4.34 R from lineup decisions, 21.64 R from high-leverage reliever selection, 2.24 R from bunts, 3.29 R from intentional walks.

LINEUP DECISIONS · 4.34 R RELIEVER SELECTION · 21.64 R BUNTS · 2.24 R INTENTIONAL WALKS · 3.29 R

Season to date · shown per category, not summed — reliever selection is high-leverage spots only (the Relievers board uses a rolling 30-day window).

How this compares — league ranking

Lineup decisions

Mark Kotsay ranks 24th of 30 managers in MLB.

1 Dave Roberts LAD 2.08 R
2 John Schneider TOR 2.33 R
3 Craig Stammen SD 2.34 R
…
24 Mark Kotsay ATH 4.34 R
…
28 Carlos Mendoza NYM 5.24 R
29 Joe Espada HOU 5.45 R
30 Will Venable CWS 5.73 R

Bunt decisions

Mark Kotsay ranks 11th of 30 managers in MLB.

1 Aaron Boone NYY 0.36 R
2 Don Kelly PIT 0.90 R
3 A.J. Hinch DET 0.93 R
…
11 Mark Kotsay ATH 2.24 R
…
28 Pat Murphy MIL 4.74 R
29 John Schneider TOR 5.31 R
30 Kevin Cash TB 6.33 R

Intentional walks

Mark Kotsay ranks 16th of 30 managers in MLB.

1 Joe Espada HOU 0.71 R
2 Clayton McCullough MIA 1.37 R
3 A.J. Hinch DET 1.44 R
…
16 Mark Kotsay ATH 3.29 R
…
28 Pat Murphy MIL 5.29 R
29 Dave Roberts LAD 6.33 R
30 John Schneider TOR 6.59 R

Game-by-game breakdown

Last 7 in tenure · Δ R/G

Sep 17 @ TB L Drew Rasmussen 1-10 +3.95

⚐ Lineup mishaps cost ~2.09 R

Sep 16 @ TB L Nick Martinez 3-4 +0.88

⚐ Pulled too late cost ~0.75 R

Sep 15 @ TB L Griffin Jax 1-2 +4.68

⚐ Lineup mishaps cost ~2.75 R

Sep 13 vs SEA W Bryce Miller 8-7 +0.83

⚐ Pulled too late cost ~0.83 R

Sep 12 vs SEA L Bryan Woo 1-19 +4.09

⚐ Lineup mishaps cost ~2.72 R

Sep 11 vs SEA W George Kirby 6-5 +1.57

⚐ Pulled too late cost ~1.57 R

Sep 9 vs TOR W Michael Lorenzen 2-0 +2.81

⚐ Lineup mishaps cost ~2.76 R

Most costly decisions

Flagged · click for detail

SEP 15 · @ TB +4.68 R/G

Lineup mishaps cost ~2.75 R

vs Griffin Jax · L 1-2

SEP 12 · vs SEA +4.09 R/G

Lineup mishaps cost ~2.72 R

vs Bryan Woo · L 1-19

SEP 17 · @ TB +3.95 R/G

Lineup mishaps cost ~2.09 R

vs Drew Rasmussen · L 1-10

SEP 9 · vs TOR +2.81 R/G

Lineup mishaps cost ~2.76 R

vs Michael Lorenzen · W 2-0

Tenure summary

Mark Kotsay manages the Oakland Athletics, with their current tenure beginning March 26, 2026.

Through 153 games of decision data, their tactical decisions cost the team an estimated 9.87 R across lineup construction, bunt strategy, and intentional walks. Lineup decisions accounted for 4.34 R of that — the largest single category.

The team's 48-70 record places them 22 games under .500. Kotsay has called 19 sacrifice bunts (2.24 R in expected runs). Intentional walks have been issued 21 times for an expected cost of 3.29 R.

Deep analytical views

The overview above is the SEO surface. Each link below opens the interactive analyzer for that decision type — sortable lists, per-game breakdowns, and the underlying numbers.

Keep reading

How this is calculated

Stats reflect only Mark Kotsay's tenure as Athletics manager — events from before the start date or after the end date are excluded. Lineup cost is the difference between an optimized batting order and the one actually used, summed across regular-season games. Bunt and intentional-walk costs come from per-decision run-expectancy deltas. Pitching cost is the sum of pull-timing and reliever-selection runs lost. Costs are shown as a season total and a per-game rate (R/G); rankings compare this tenure's per-game rate against the league-wide distribution of current and recent manager tenures. RunsLeft does not assign letter grades — the costs and rankings are descriptive analytics.

Read the full methodology. Career managing history coming in v2 with Lahman integration.