Indiana football has defied all expectations in the first year under Curt Cignetti.

The Hoosiers have transcended an expected "rebuild" in 2024, becoming a nationally ranked, top-five team that is undefeated at 10-0 going into Week 13.

The Hoosiers will look to continue their underdog story on Saturday when they travel to Columbus, Ohio to take on No. 2 Ohio State in a potential Big Ten championship elimination game. The game has massive College Football Playoff implications involved as well.

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Indiana maintained its No. 5 ranking in the CFP top 25 and projected No. 7 seed in the 12-team bracket in Tuesday's third set of CFP rankings.

Despite all that, the Hoosiers enter their biggest test of the season as a 10.5-point underdog against the Buckeyes on Saturday, according to BetMGM. A win would be monumental for Indiana, giving it one of the highest-ranked victories in program history. It would also quiet the outside noise about Indiana not having a signature win on its playoff résumé.

The Buckeyes have had the Hoosiers' number for quite some time. Here's what you need to know about Indiana's history against Ohio State, including how many times the Hoosiers have beaten the Buckeyes through the years:

When was Indiana football's last win vs Ohio State?

The Hoosiers haven't beaten the Buckeyes since 1988, when they won 41-7 at home in Bloomington, Indiana. That marked the second consecutive win for Indiana, who beat Ohio State 31-10 in 1987. It was just the second win streak for Indiana in its series against Ohio State after the Hoosiers won four straight games from 1903-05 and 1913.

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How many times has Indiana football beaten Ohio State?

Indiana has beaten Ohio State 12 times in its previous 97 meetings, according to the Hoosiers' record book. The Buckeyes lead the all-time series record 80-12-5.

The Hoosiers' first win against the Buckeyes was on Nov. 23, 1901, in Columbus, an 18-6 victory. The teams tied 6-6 the following year, then Indiana won the next four meetings to start the series 5-0-1. That four-game winning streak from 1903 through 1913 is the Hoosiers' longest against the Buckeyes.

As noted by Ohio State in 2022, the series against the Hoosiers is the third-longest running series in program history. Saturday's game in Columbus will be the 98th all-time meeting between the programs.

Here's a breakdown of when Indiana has beaten Ohio State:

• Nov. 23, 1901: Indiana 18, Ohio State 6

• Nov. 28, 1903: Indiana 17, Ohio State 16

• Nov. 12, 1904: Indiana 8, Ohio State 0

• Nov. 30, 1905: Indiana 11, Ohio State 0

• Nov. 1, 1913: Indiana 7, Ohio State 6

• Nov. 8, 1924: Indiana 12, Ohio State 7

• Nov. 6, 1937: Indiana 10, Ohio State 0

• Oct. 30, 1943: Indiana 20, Ohio State 14

• Nov. 1, 1947: Indiana 7, Ohio State 0

• Oct. 20, 1951: Indiana 32, Ohio State 10

• Oct. 10, 1987: Indiana 31, Ohio State 10

• Oct. 8, 1988: Indiana 41, Ohio State 7

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Indiana-Ohio State football series record

• Series record: Ohio State leads 80-12-5

• Indiana's last win: 1988 (41-7)

• Ohio State's last win: 2023 (23-3)

As noted by Indiana football's record book, the Hoosiers trail the all-time series against Ohio State 80-12-5. The Hoosiers are currently on a 29-game losing skid against the Buckeyes, not excluding the tie between the programs in 1990.

Saturday's meeting between Indiana and Ohio State will be the fourth time in all-time series history that both teams are ranked in the top 25. It's the first time with both teams being ranked in the top five ranked teams, per Ohio State's game notes.

This article originally appeared on USA TODAY: Indiana-Ohio State series history, record between Hoosiers, Buckeyes