The play-in round of the 6A and 5A boys and girls basketball playoffs began last week, with 20 teams from Boulder, Broomfield and Longmont.

Two rounds later, and it’s down to four.

Longmont is the last remaining local boys team in the 6A or 5A bracket, while the girls from Broomfield, Mead and Frederick also remain.

The round of 16 is next, with the boys playing Tuesday and girls going Wednesday.

A look at those upcoming games:

5A boys (Tuesday)

No. 11 Longmont at No. 6 Windsor

The Trojans (16-8) didn’t shoot lights-out in their opening-round, 41-34 win over No. 22 Grand Junction on Friday night. But they protected the ball well — tallying just nine turnovers. And even better, they asserted their will defensively, holding the Tigers (12-11) to just five points in the fourth quarter.

Windsor (18-6) will likely provide a bigger challenge. The Wizards averaged 63 points per game and are a perfect 8-0 at home this winter.

The Trojans will probably need a better offensive showing than they had last weekend to move on. In the round of 32, they shot 39% from the field and just 59% from the free-throw line.

6A girls (Wednesday)

No. 3 Broomfield hosts No. 14 Riverdale Ridge

Expect college scouts to be on site at Broomfield High School on Wednesday, with both Riverdale Ridge’s Brihanna Crittendon (26.8 PPG, 5.8 RPG) and Broomfield’s Reece Gilpatrick (14.0, 6.0) on hand.

Crittendon, a 6-foot-3 junior, is a consensus five-star girls basketball prospect. Last winter, she led the Ravens past Holy Family in the 4A title game for her first high school championship.

Gilpatrick, at 6-foot-4, has emerged as one of the top freshmen in Colorado. Per her X account, she already has Division-I offers from CU, Texas Tech and Texas A&M.

The Eagles (23-1) beat No. 30 ThunderRidge 61-36 in the first round behind a 24-5 first quarter. Senior Olivia Kim was marvelous, shooting 7 of 9 from the field to lead the way with 18 points.

5A girls (Wednesday)

No. 2 Mead hosts No. 18 Thompson Valley

The Mavericks (21-3) flexed a defense that has been good all season long, allowing the fewest points in 5A’s first round.

Thompson Valley (17-7) was stingy as well in a 41-21 win at Palisade.

Outside of Mead’s loss to 6A No. 3 Broomfield on Feb. 18, the Mavericks have been dominant in Colorado this winter, where only three of their wins have come by less than 10 points.

No. 7 Frederick hosts No. 23 Lewis-Palmer

If Frederick (18-6) moves on here, it is in line to get Mead in the quarterfinals. The Mavs, who beat the Golden Eagles 54-19 on Jan. 17, host Thompson Valley in the second round.

Frederick is playing its best basketball of the season. Winners of eight straight, the Golden Eagles can get back to the 5A quarterfinals for a second straight year with a win.

In the way is Lewis-Palmer (14-10). The Rangers have won three straight, including their first-round upset over No. 10 Standley Lake.