In his 64th game with the Ravens, Heap became the franchise's leader in receiving yards, surpassing Qadry Ismail in the third quarter of Monday night's 48-3 win over the Green Bay Packers.
Heap beat Packers safety Mark Roman down the sideline for a 27-yard touchdown, putting the Ravens up 31-3 and increasing his chances of making a third trip to the Pro Bowl.
It was the second touchdown catch of the night for Heap, who fought off an early jam from Roman to beat him by a step. The play also gave Heap the third 100-yard receiving game of his career. He finished the night with nine catches for 110 yards.
"It was fun," Heap said. "I don't know what it does for me. I just went out and played football, and the win was the biggest part."
The touchdown gave Heap 2,841 receiving yards for his career, besting Ismail's 2,819 from 1999 to 2001. Heap also has 69 receptions this season, a career best.
He has at least two catches in every game this season.
"I think that is what our offense is capable of, getting everybody involved," Heap said. "We had a bunch of guys going for yardage."
Besides Heap, Ravens running back Jamal Lewis had one of his best games in a dismal season.
Lewis rushed for 105 yards on 22 carries, just the second time this season he had rushed for more than 100 yards.
"We came out hoping to establish the run, and we managed to establish both the run and pass," left tackle Jonathan Ogden said. "It was a great night for us."
Lewis also scored his third touchdown of the season on a 3-yard run in the fourth quarter.
"It wasn't my best game of the season, but I did do some good things," Lewis said.
Clayton took a handoff from Kyle Boller, then ran an option with running back Chester Taylor. The play lost a yard, but it came in the aftermath of an 11-yard touchdown run by Clayton from shotgun formation the previous drive.
"Every game I start out there is a learning experience," Clayton said.