Norwin didn't lose a regular-season baseball game the past two seasons.
The Knights' unbeaten run didn't reach even one game this season.
Zack Martinelli tossed a one-hitter and Joe DeFloria hit a three-run home run to lead Class AAAA No. 5 Hempfield to a 10-0, five-inning win against visiting Norwin in Section 2.
Hempfield (2-0, 1-0) was the runner-up to Norwin (0-1, 0-1) in the section a year ago.
Norwin went 17-0 in the regular season the past two years, but lost in the WPIAL quarterfinals both times.
Other top baseball games
• Shea Sullivan's three-run home run helped visiting Pine-Richland (3-0) upset Class AAAA No. 1 Seneca Valley (0-1), 14-11, in a non-section game.
• Mitch Machi hit a home run and picked up the win on the mound for Class AAAA No. 4 North Allegheny (1-0) in a 7-5 non-section win against visiting Gateway (0-1).
• David Bednar struck out seven and also went 3 for 4 with two RBIs to help Class AAA No. 5 Mars (3-1) defeat No. 2 Blackhawk (0-1), 6-4, in a non-section game at Chippewa Park. Blackhawk's Brendan McKay struck out eight and hit two home runs.
• Tyler Day doubled in the winning run in the seventh inning to give host Chartiers-Houston (3-2, 1-0) a 4-3 win against Class AA No. 2 Brownsville (3-1, 0-1) in Section 2.
Star of the day
• Sean Thompson pitched a complete game, struck out 13 and added a two-run home run and three RBIs for Indiana (3-0, 1-0) in a 3-1 victory against visiting Greensburg Salem (0-1, 0-1) in Class AAA Section 2.
Top softball game
• Kiersten Manor threw a one-hitter with 12 strikeouts and New Brighton (4-1, 1-1) scored twice in the sixth to grab a 2-0 Class AA Section 5 win against visiting Beaver (2-1, 1-1).