Justin Forsett scooted up the middle and lunged forward while a couple of Detroit defenders closed in to stop him. His knee hit the ground, but the Houston running back hopped up quickly and took off toward the end zone.
''I know now that I was down, but I didn't think I was during the play,'' Forsett said. ''I didn't think my knee hit, and there was no whistle, so I kept going.''
Forsett had nothing to lose by getting up and running - and unbelievably, the 81-yard scoring play stood. The officials missed the call, giving the Texans a touchdown, and Detroit coach Jim Schwartz inadvertently wiped out any chance of a replay review by throwing his challenge flag when he wasn't allowed to.
That was all Houston needed to start a second-half comeback, and the Texans went on to beat the Lions 34-31 in overtime Thursday.
''Sometimes it's better to be lucky than good,'' running back Arian Foster said.
AFC South-leading Houston (10-1) has won five straight - two in a row in OT - and if a...