William Lopa has also been invited to paint live at World Series games and All-Star games. He has also created commemorative artwork for several NFL Superbowls, The Kentucky Derby, The Manning Bowl, PGA Tours as well as ringside at several Boxing matches. 

William Lopa has also been commissioned by several sports players and their families, including Michael Jordan, Derek Jeter, Cal Ripken, Jr., Rodger Clemens, Yogi Berra, Eli Manning, Don Mattingly, Mariano Rivera, Peyton Manning,, Diane Munson, Eleonore Gehrig, Julia Ruth, and Danny Mantle to name a few.