The math doesn’t quite add up. Not to catcher Anthony Grippo, not to pitcher Alec Martin, not even to coach John Boyle.

Four seniors graduated, promising freshman Blase Bugosh decided to focus on track, and two would-be starters, senior Ian Shipley and sophomore Bobby Smithnosky, transferred to Mt, Pleasant, leaving the Greensburg Central Catholic baseball team with gaping holes in the batting order — an overall personnel dilemma.

“We didn’t really know what to expect,” said Grippo, the Centurions’ senior catcher and Penn State recruit. “We knew it would be a little different and we’d have to find ways to make it work.”

Sure, a talented nucleus came back in Grippo and senior pitchers Tyler Samide and Martin, along with junior infielder Stephen Kochis — a fine group to build around.

But if someone would have told Boyle his team would be 17-0 and about to play for a WPIAL Class A championship, “I’d probably laugh,” the coach said.

“This is the best story in WPIAL baseball,” Boyle said. “We lost six guys who batted .400 or better.

“We added two guys who haven’t played since eighth grade. And we had some freshmen who were unproven.”

Second-seeded GCC, which finished a regular season undefeated for the first time in program history, will play No. 1 Eden Christian (15-4) for the title at 1 p.m. Tuesday at EQT Park in Washington.

The Centurions have one WPIAL baseball title, in 2015.

Freshman Carson Kramer has been a pleasant surprise at third base, adding some pop to the offense, while freshman Dan Brady has given Boyle some help from the bullpen.

“Kramer led the WPIAL in batting average (.614) as a freshman,” Boyle said.

Senior infielder Nolan Sopko (.510) has emerged as a solid leadoff hitter. He and senior outfielder and No. 9 hitter Will Bateson are the players who last played the game in junior high.

Replacing Shipley and Smithnosky was a tall task that in many ways has been tackled with a by-committee approach.

“Like Mike Tomlin said, worry about those who are available to you, not those who aren’t,” Boyle said. “We had to move on and see what other guys could do to help us. We have had a lot of guys step up.”

The new additions have blended well with the unquestioned core: Grippo, Samide and Martin, a Fairmont State commit.

Grippo is hitting .580 with 29 runs and 25 RBIs, Samide hits .545 with five home runs and 36 RBIs and is 6-0 with a 0.00 ERA, and Martin is 5-0 with a 1.90 ERA.

Kochis has a .478 average with 31 runs.

Samide, a Chatham commit and two-way threat as an ace pitcher and power hitter, has a different perspective on GCC’s “rebuild.”

“We knew we could do this all along, of course,” he said. “I am not surprised. We’re always playing for something (at GCC). We are now, and the guys who play after us will too.”

Grippo is thrilled to have a shot at a WPIAL title, but isn’t over-hyping the opportunity.

“It’s just another baseball game,” Grippo said.

But not an ordinary team playing in it.