No. 4 Ohio St extends winning streak to 21 by steamrolling Boilermakers 56-0

Ohio State defensive lineman Noah Spence, right, sacks Purdue quarterback Danny Etling during the first half of an NCAA college football game in West Lafayette, Ind., Saturday, Nov. 2, 2013. (AP Photo/Michael Conroy) (The Associated Press)

Purdue quarterback Danny Etling throws against Ohio State during the first half of an NCAA college football game in West Lafayette, Ind., Saturday, Nov. 2, 2013. (AP Photo/Michael Conroy) (The Associated Press)

WEST LAFAYETTE, Ind. – Doran Grant picked off Purdue's first pass, returning it for a touchdown, and Braxton Miller threw for 233 yards and four touchdowns Saturday as No. 4 Ohio State extended the nation's longest winning streak to 21 with a 56-0 rout at Purdue.

The Buckeyes (9-0, 5-0 Big Ten) have not lost in 22 months. Coach Urban Meyer also won his 22nd straight game, tying a personal best established at Florida. Ohio State scored the most points and produced the most lopsided scoring margin in the 56-game history of this series. Both topped the marks set in Ohio State's 49-0 victory in 2010.

Purdue (1-7, 0-4) lost its sixth in a row.

Gray's interception helped the Buckeyes take a 28-0 lead after one quarter, and they extended it to 42-0 at the half.

Miller finished19 of 23. Kenny Guiton threw for one TD and ran for two more.