ORCHARD PARK, N.Y. (AP) — Undrafted rookie Tyree Jackson hit David Sills for an 8-yard touchdown pass with 8 seconds left in rallying the Buffalo Bills to a 27-23 win over the Minnesota Vikings to close the preseason Thursday night.

Victor Bolden recovered Jackson’s fumble in the end zone and Marcus Murphy scored on a 79-yard punt return as the Bills scored three touchdowns in the final 3:53 to overcome a 23-6 deficit. The Bills finished 4-0 for the first unbeaten preseason in team history.

Minnesota receiver Laquon Treadwell caught all three passes directed his way for 30 yards in what could be the 2016 first-round draft pick’s final appearance with the Vikings. While the Vikings rested their starters, Treadwell played the entire first half amid speculation he could be traded or cut by Saturday, when NFL teams are required to set their 53-player rosters. Treadwell has been passed on the depth chart by Chad Beebe, Jordan Taylor and Jeff Badet after three mostly unproductive seasons since the Vikings selected him with the 23rd pick in 2016.

Third-string quarterback Kyle Sloter hit Ameer Abdullah for a 15-yard touchdown pass, and De’Angelo Henderson scored on a 3-yard run for the Vikings (3-1).

Treadwell caught Sloter’s first attempt for 14 yards and also converted a third down by making a 9-yard catch on a crossing pattern. He finished the preseason with eight catches for 89 yards.

Jackson, who spent his college career at Buffalo, capped the comeback by hitting Sills on a crossing pattern over the middle. Jackson finished 22 of 33 for 175 yards, and had a team-best 78 yards rushing in playing the entire game.