Watch Zion, LeBron and other NBA stars in their high school dunk contests

Zion steals the show at 2018 Powerade Jam Fest (0:49)

High school hoops phenom and Duke commit Zion Williamson threw down some vicious dunks to win the 2018 Powerade Jam Fest. (0:49)

It's almost impossible to not rewatch a dunk contest these days. And yet players like LeBron James and Zion Williamson haven't competed in one.

That is, if you don't count high school.

ESPNU will feature 11 Powerade Jam Fests from the previous years on Monday, featuring some of the biggest names in basketball, beginning at noon ET.

Noon: Powerade 2016 Jam Fest

1 p.m.: Powerade 2013 Jam Fest

2 p.m.: Powerade 2008 Jam Fest

3 p.m.: Powerade 2004 Jam Fest

  • Notable players: Candace Parker, JR Smith

4 p.m.: Powerade 2019 Jam Fest

5:30 p.m.: Powerade 2017 Jam Fest

7 p.m.: Powerade 1995 Jam Fest

7:30 p.m.: Powerade 2003 Jam Fest

  • Notable players: LeBron James

8:30 p.m.: Powerade 2018 Jam Fest

  • Notable players: Zion Williamson, Olivia Nelson-Ododa

10 p.m.: Powerade 2002 Jam Fest

11 p.m.: Powerade 2007 Jam Fest