His momentum carried his across the line, giving the Giants the lead but leaving 57 seconds on the clock for Brady to try to work some last-minute magic.
As Brady's Hail Mary attempt drew a crowd, Welker (83) and Rob Gronkowski (not pictured) got into position to make a ricochet catch.
Defenders are told to knock the ball down in such situations.
Eli now has two Super Bowl victories to older brother Peyton's one.
As Giants fans love to say, you can't spell elite without Eli.