The quarterfinals of the 2020-21 FCS playoff bracket begin with two games at 3 p.m. ET on Sunday — No. 2 seed Sam Houston State versus North Dakota State and No. 4 seed  Jacksonville State versus Delaware. No. 3 seed James Madison takes on North Dakota at 6 p.m. and No. 1 seed South Dakota State faces Southern Illinois in the nightcap at 9 p.m.

The first round of the FCS playoffs provided three one-possession games and now four berths to the semifinals are on the line. Here are seven essential numbers to know for the quarterfinals.

1) 41:26

That’s how long Southern Illinois possessed the ball in its 38-14 win over No. 1 North Dakota State on Feb. 27. The Salukis have already beaten a No.1-ranked team this season, so can they now defeat a No. 1-seeded team?

Southern Illinois’ offense averaged 6.1 yards per play to North Dakota State’s 6.0 yards per play, but when the Salukis had possession of the ball, they were unlikely to give it up. They ran 73 plays on offense to the Bison’s 45, as Southern Illinois converted on 11-of-16 third-down conversion attempts, plus on the team’s only fourth-down conversion try.

North Dakota State was 4-for-10 on third down, for comparison. Southern Illinois  won the turnover battle 2-0 and punted just three times — two of which pinned North Dakota State inside its own 20-yard line. The Salukis scored on all five of their trips inside the red zone.

If Southern Illinois is to upset No. 1 seed South Dakota State, it will likely take another dominant performance in all three phases, such that the Salukis control the clock with timely and frequent first downs, a couple of turnovers and advantageous special teams play.

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2) .958

That’s South Dakota State’s red zone scoring percentage, which is why Southern Illinois will need to control the clock as much as possible and keep the Jackrabbits’ offense on the sideline. South Dakota State has scored 23 times in 24 trips to the red zone this season, including 15 touchdowns and eight field goals, with only one missed opportunity. The Jackrabbits are almost automatic to score.

3) 486.4

That’s No. 2 seed Sam Houston State’s average yards of total offense per game, which ranks ninth nationally and the highest among the teams in the quarterfinals of the FCS playoffs. Despite being the No. 2 seed in the playoff bracket, Sam Houston’s second opponent in the playoffs is a little program by the name of North Dakota State, which has won the last three FCS national championships and eight of the last nine.

Wins over North Dakota State are rare. Wins over North Dakota State in the playoffs in the last decade are especially so.

The undefeated Bearkats average nearly seven yards per play, but they’re coming off of their lowest point total of the season — a 21-15 win over Monmouth, which was ranked No. 10. In Sam Houston State’s first three games of the season, it scored 43, 71 and 62 points, so points aren’t typically hard to come by for a team that averages 44.8 per game.