St. Joe pushed the action, made easy baskets, and held onto the ball.
Calvert, meanwhile, struggled, and the result was a 74-37 Streaks victory Friday in Tiffin.
To Senecas coach Ted Willman, the result was all about execution.
Specifically, the Senecas didn't execute enough. The coach said he saw possessions where Calvert did what was designed and made nice plays.
But there were too many times when that didn't happen.
"It's become a mental thing with this group of guys," Willman said. "I tell the guys, 'you know what to do. It's a matter of doing these things all the time.'"
St. Joe coach Jonathan Will had no such problems. His team was able to play fast and beat Calvert for a number of easy baskets. At the same time, the Streaks turned the ball over only three times in the first half, and 10 times overall.
"We got into a good start, a good flow early," Will said. "We got everybody in the game early, and when you've got a lead, your kids settle down and play. And I thought our kids played one of our cleanest games this year."
It was a game where just about everyone contributed for the Streaks. Hunter Harrison led the way with 14 points, while Connor Dudley scored 13, Ryan Williams 10 and Luke Stierwalt 11. Dudley added eight rebounds.
Calvert (2-9, 1-3 Midland Athletic League) kept things close for about the first six minutes of the game. The Senecas trailed just 10-9 after a Donavon Stith layup with 2:53 left in the first.
But Calvert went scoreless over its next 11 possessions. It allowed the Streaks to go on a 15-0 run that was broken only when Marcus Somers made a free throw with 4:27 left in the half.
"We need every possession we can get offensively," Willman said. "If you're not turning it over, you need to find a way to put the ball in the basket."
St. Joe led 39-17 at the half, and outscored the Senecas 20-14 in the third quarter.
"When you've got a veteran group, it's easy to just sit back and let them play their basketball game," Will said. "That's a lot of what happened tonight. I did not have to do a lot of coaching tonight; I've got to be honest."
St. Joe (8-2, 3-1) made 33 of 60 shots from the floor, while Calvert went 15 of 48.
The Senecas were led by Brian Gruss, who made three 3-pointers and finished with 13 points. Mike Bennett had eight points, while Somers had eight rebounds to go with five points.