Answer based on context:

Hoping to increase their winning streak the Giants played at home ground for an NFC duel with the Lions. In the first quarter the Giants trailed early as QB Shaun Hill made a 14-yard TD pass to WR Nate Burleson. They replied when RB Brandon Jacobs got a 4-yard TD run. They took the lead with QB Eli Manning making a 33-yard TD pass to WR Mario Manningham. The lead was cut when kicker Jason Hanson nailed a 50-yard field goal. The Giants continued to score in the 3rd quarter with Manning finding TE Travis Beckum on a 1-yard TD pass. The Lions responded in the 4th quarter with QB Drew Stanton completing an 87-yard TD pass to WR Calvin Johnson, but the Giants pulled away with Jacobs making a 6-yard TD run. The Lions tried to rally but only came away with another 50-yard field goal by Hanson giving the Giants the win.

How many yards was the longest touchdown play?
87