After playing college football for the Arizona State Sun Devils, Heap was selected by Baltimore in the first round of the 2001 NFL draft.

Todd helped Mountain View win back-to-back football state championships in 1996 and 1997, going undefeated both years.

[citation needed] Heap played college football at Arizona State University, majoring in pre-business.

Heap recorded 16 receptions for 206 yards and one touchdown in his rookie season, playing behind eight-time Pro-Bowler Shannon Sharpe.

Heap was again voted to the Pro Bowl as the Ravens won the AFC North division for the first time.

It would also prove to be the Ravens best regular season, as they won the AFC North for the second time in franchise history with a record of 13–3.

Heap missed 10 games in the 2007 season due to injury, and caught only 23 passes, amassing 239 yards and one touchdown.

In a Week 13 match-up with the Steelers, he suffered a pulled hamstring on the first offensive snap for Baltimore, taking him out of the game.

[1] In 2017, Heap joined the Ravens' radio broadcast crew, to serve as a color analyst for four regular-season games.

[8][9][10][11] In her honor, the Heap family created Hugs from Holly, a campaign that centers around acts of kindness.

His mother is the cousin of former pro-bowl NFL player Danny White, while his great-uncle Verl played basketball at Arizona State.