Tom Mellor had a brace and four assists and Tyler Whitmer added two goals and an assist as the host Harrisburg Heat upset the Professional Arena Soccer League's Eastern Division-leading Detroit Waza, 10-6, Saturday at Farm Show Complex.
Miki Djerisilo scored twice for Detroit in the loss.
Harrisburg is in third place in the division at 3-7, 5 1/2 games behind the Waza (10-2). The Heat hosts the three-time defending league champion San Diego Sockers this Friday and the Illinois Piasa next Saturday.
Detroit will be on the road at the Rockford Rampage next Saturday and the Chicago Mustangs next Sunday.