CARBONDALE ? During the first half Friday at Santa Fe Trail, the Chargers seemed to be going through the motions.

There was no energy, no big play, no spark as they slogged their way through Leavenworth Immaculata’s zone defense. It was good enough for a six-point halftime lead, but not good enough by SFT girls basketball coach Brenda Dahl’s standards.

Dahl’s alarm-clock vocal cords buzzed in the locker room. The Chargers awoke with a tenacious second half and rolled to a 50-33 victory.

“At halftime coach told us we needed to go, and I knew she was serious,” said Trail junior Lindsay Boss, who scored 14 of her game-high 21 points in the second half and added six assists. “We had good ball movement and good passing in the second half, and it was a total team effort.”

Despite four ties in the first 10 minutes, Immaculata never posed a legitimate threat. Its 2-3 zone kept the pace slow and knocked the Trail offense out of sync for most of the first half. Boss’ three-pointer and a put-back by junior Alexis Pryor provided the halftime cushion before the second-half eruption.

Trail forced an up-tempo third-quarter with aggressive backcourt defense from Boss and junior guard Brea Rutter. An 11-2 run had Imac reeling.

The Raiders scored just 17 points in the second half and hit 26 percent of their shots overall, compared to Trail’s 43-percent shooting.

Boss drained four treys in the second half, and Pryor cleaned up the rest. She scored 15 points — most on put-backs — and grabbed 13 rebounds.

Immaculata boys 51, Santa Fe Trail 48

There’s something about close games that doesn’t bode well for the Santa Fe Trail boys. Three times they’d played nail-biters this year, and all three were losses.

They chalked up number four against Immaculata (7-1, 6-1) after missing four free throws down the stretch and then giving up a three-pointer to forward Danny McEvoy with 2.8 seconds left.

McEvoy stole Trail’s ensuing inbounds pass and ran out the clock. His bucket and steal capped a stellar performance in which the 6-foot-4 junior scored 27 points on 12-of-17 shooting.

Senior Rob Musgrave led the Chargers with 26 points. Jake Carter added 11.