LSU junior cornerback Donte Jackson's 40-yard dash was one of the most anticipated of the NFL Combine, and on Monday morning, the New Orleans native stepped to the line to deliver his attempt at breaking the NFL Combine's record.

Last year, Washington's John Ross broke the NFL record with a 4.22 40-yard dash, and Jackson entered the weekend with many feeling he had the best chance to break the mark.

After Alabama's Tony Brown posted the fastest time of the defensive backs early on with a 4.37 40-yard dash, Jackson stepped to the line on his first attempt and delivered a 4.32 40-yard dash, pulling up after his run and favoring his leg.

Jackson is still expected to run his second 40-yard dash, which will give him a chance to break the 4.30 mark. Jackson and DJ Chark now own the two best times at the NFL Combine, with Jackson at 4.32 and Chark at 4.34.