Putting Up Numbers· college football

BYU’s carries with LJ Martin and without LJ Martin

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Against what the season’s ratings expected, BYU was 1.1 carries over with LJ Martin and 4.5 carries under without LJ Martin over its last 25 games, 18 games against 5. The plain averages are 37.2 and 28.6, a difference of 8.6. Both opponents outside the major colleges were with LJ Martin. All 3 games while unranked were with LJ Martin. All 3 games after a bye were with LJ Martin.

LJ Martin, running back: 1,866 rushing yards, 327 carries and 45 receptions in 20 of those 25 games, 44% of BYU’s carries in those games.

carries a game over expected

A +5.6 difference in carries over expected with LJ Martin vs without LJ Martin is about what you’d expect.

A +8.6 difference in carries with LJ Martin vs without LJ Martin is a bit unusual: shuffle which games were with LJ Martin and it comes up 18 times in 100.

The games

with LJ Martinwithout LJ Martin
BYU’s games, last 25 games, each marked with LJ Martin or without LJ Martin
SideDateGameResultcarriesExpected
Nov 23, 2024@Arizona StateL2330.6
Nov 30, 2024vsHoustonW3932.5
Dec 28, 2024vsColorado (neutral)W3936.2
Aug 30, 2025vsPPortland StateW48—
Sep 6, 2025vsStanfordW4033.5
Sep 20, 2025@East CarolinaW3434.0
Sep 27, 2025@ColoradoW3440.7
Oct 3, 2025vsWest VirginiaW4137.3
Oct 11, 2025@ArizonaW5135.7
Oct 18, 2025vsUtahW4038.4
Oct 25, 2025@Iowa StateW2834.4
Nov 8, 2025@Texas TechL2732.5
Nov 15, 2025vsTCUW3835.2
Nov 22, 2025@CincinnatiW4839.7
Nov 29, 2025vsUCFW3936.2
Dec 6, 2025vsTexas Tech (neutral)L2932.5
Dec 27, 2025vsGeorgia Tech (neutral)W2237.4
Sep 5, 2026vsUUtah TechW44—
Sep 12, 2026vsArizonaW2836.0
Sep 19, 2026@Colorado StateW3836.5
Oct 3, 2026@TCUW3631.2
Oct 9, 2026vsIowa StateW2931.9
Oct 17, 2026vsNotre DameW2930.0
Oct 24, 2026@UCFL3533.8
Oct 31, 2026vsArizona StateW2832.5

Method

Read against .

  • Expected is an offense and a defense a team, fit over every game of its season between two teams in the table with the game being read left out, plus 0.1 in 2024, plus 0.3 in 2025, plus 0.6 in 2026 for the home team (the edge the fit finds once strength is in), nothing at a neutral site.
  • Each expected number is then fit to the season’s games: a game bears out about 73% in 2024, 74% in 2025, 61% in 2026 of the difference the model predicts.
  • The shuffle keeps the season’s shape: the games are cut in two where one date leaves the least variance, each game is read against its stretch, and the sides are shuffled only inside each stretch.
  • Portland State, Utah Tech have no other game in the table, so those games have no expected number and sit out the second figure.
  • Who played is read from the schools’ box scores’ participation lists for 13 of these 25 games; in the other 12 a player is counted as in them when the box score has a stat for him.