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Scott G Winterton, Deseret News
Corner Canyon's Brayden Johnson is fouled by Alta's Brayden Kelm defending during play at Alta Friday, Jan. 8, 2016. Corner Canyon won 59-44.

Brackets and schedules are set for 1A, 2A and 3A boys and girls high school basketball as playoffs begin this weekend.

In the meantime, 4A and 5A region races are going down to the wire as some of the state's best teams match up.

Here are the four most exciting games this week:

1. Boys basketball: No. 6 Pleasant Grove (15-4, 6-3) at No. 5 American Fork (17-4, 7-3), Tuesday at 7 p.m.

The Vikings and Cavemen battle it out as both seek the second seed from Region 4 in the state tournament. American Fork holds a slight edge in the standings and beat Pleasant Grove 64-55 after a slow start for the Vikings on Jan. 26.

Spencer Johnson averages 18.9 points and 7.3 rebounds per game for the Cavemen, while Pleasant Grove's Brody Childs puts up 15.9 points and 7.9 boards per game.

2. Girls basketball: No. 11 Maple Mountain (16-3, 9-2) at No. 9 Springville (18-2, 10-1), Tuesday at 5 p.m.

In the last game of the regular season for both teams, the Red Devils and Golden Eagles are playing for the Region 8 crown.

Last time they met, Liz Eaton rallied Maple Mountain to a 53-51 comeback win, with 20 points, 11 rebounds and six assists. After a season-ending ACL injury to Eaton, another win over Springville is a tall order. Enter Nicole Heyn, who has scored 42 points over the last two games. Lydia Austin has scored in double digits for the Red Devils in every game since the loss to the Golden Eagles.

3. Boys basketball: No. 4 Timpview (16-4, 9-0) at No. 11 Corner Canyon (17-4, 8-2), Tuesday at 7 p.m.

The Thunderbirds have won 14 in a row as they take on the Chargers Tuesday.

When they met on Jan. 22, Timpview outscored Corner Canyon 23-8 in the second quarter en route to a 76-69 win. The Chargers outscored the Thunderbirds in the first, third and fourth quarters.

Gavin Baxter leads Timpview with 17.2 points and 6.3 boards per game, while Brayden Johnson averages 13.6 points and 8.4 rebounds.

4. Girls basketball: Judge Memorial (14-6, 9-2) at Olympus (14-6, 8-3), Tuesday at 5 p.m.

A win for Olympus would vault the Titans into at least second place in Region 6, while the Bulldogs could win the region title.

Judge Memorial won 64-54 when the teams last met, led by Vanessa Austin's 22 points and 17 rebounds. But Olympus is on a four-game winning streak, led by Miranda Johnson, who scored 30 points against Cyprus on Friday.