Jeff Koscielniak, Old Mill

The senior pitcher's performance in relief keyed the Patriots' 8-4 victory over Chesapeake in last week's baseball county championship. When Koscielniak entered the game in the bottom of the fourth inning, there were no outs, Chesapeake had runners on the corners and Old Mill trailed, 4-1.

But Koscielniak announced his presence with two straight strikeouts, then got a batter to fly out to end the inning. In the bottom of the fifth, he allowed one hit but retired the side without the runner advancing past first.

Old Mill scored four runs in the top of the sixth to take a one-run lead, but that was more than enough considering how Koscielniak was pitching. In the bottom of the sixth he induced a ground ball and struck a batter before yielding a single to right field. Just as Chesapeake seemed to pick up some momentum, however, Koscielniak made a quick move and picked off the runner at first.

"That was a huge play," said senior catcher Mike Broccolino. "That was the play of the night for me. That was amazing."

In the bottom of the seventh, Koscielniak sandwiched strikeouts around a fly out to put the game away.

"Jeff wanted to start; he wanted to pitch today," Old Mill Coach Mel Montgomery said. "He had a chance to get in there, and he shut the door on them."

South River's Boys' Lacrosse Team

In the Maryland 4A/3A East Region quarterfinals, the Seahawks upended top-seeded Broadneck, 12-11, to advance to the semifinal against Severna Park. South River had lost to Broadneck, 13-5, less than two weeks earlier.

"Our team has always been able to play at that level; we just hadn't put everything together yet," said South River Coach Jim Haluck. "Either we did not play four quarters, or we didn't have the attack and midfield and defense working together as a team. It just happened to come together Saturday. They were hyped up about it, and they played to their potential."

Broadneck, which never led on Saturday, tied the game at nine but then watched as South River scored three in a row to take a 12-9 lead with 3 minutes 45 seconds to play.

The Bruins pulled within one but could get no closer. Broadneck, which won its first 14 games and ascended to the No. 1 ranking in The Post's top 10, ended the year with 2 consecutive losses.

Sean Summerville led Broadneck with four goals.

Southern's Girls' Lacrosse Team

Ten Bulldogs scored goals in a 21-4 victory over Wicomico in the 2A/1A East region quarterfinals. Melissa Line and Abbey Smith led the way with three goals and an assist apiece.

Reliever Jeff Koscielniak helped Old Mill beat Chesapeake, 8-4.