Players who won two matches each on Tuesday advanced to the semifinals at The Ridge at Castle Pines North.

Still in the hunt for the boys title are AJ Ott (left) of Fort Collins, who’s attempting to win his second junior major of the year; U.S. Junior Amateur qualifier Griffin Barela of Lakewood; David Leede of Greenwood Village; and Jack Castiglia of Lakewood. Ott will face Leede and Barela will meet Lakewood High School teammate Castiglia in Wednesday morning’s semifinals for the right to advance to the afternoon’s title match.

Castiglia edged Colorado Junior Amateur winner Braden Bentley of Colorado Springs 1 up in the round of 16 before topping Ryan Zetwick of Castle Rock 2 up in the quarters.

In the girls tournament, the semifinalists are Arielle Keating of Colorado Springs, who defeated top-seeded Caroline Jordaan 2 up in Tuesday’s quarterfinals; No. 2 seed Hailey Schalk of Erie, who scored a 9-and-7 win in the quarters; Sarah Hwang of Monument; and Lauren Lehigh of Loveland. In the semis, Keating will meet Hwang and Schalk will square off with Lehigh.

Amy Chitkoksoong of Aurora, winner of last year’s CWGA Junior Match Play, was ousted 3 and 2 in the round of 16 by Emma Bryant of Aurora before Hwang defeated Bryant 2 and 1 in the quarterfinals.

In both the boys and girls events, the winners of Wednesday’s morning’s semifinals will meet in the afternoon for the championship.

To see the brackets for each tournament, click on the following: BOYS, GIRLS.

Ott, the 2015 CJGA Tournament of Champions winner, backed up his first-round 67 with a 3-under-par 69 on Thursday, giving him an 8-under 136 total with just Friday’s final round remaining.

The Colorado State University signee (pictured) supplemented his two eagles — on the fifth and 16th holes — with two birdies and three bogeys on Thursday. The 18-year-old is three up on Walker Lee of Houston (70-69) and seven up on Luke Travins of Colorado Springs (71-72). Among the five players tied for fourth at 144 are Davis Bryant of Aurora, Oliver Jack of Denver and David Leede of Greenwood Village.

Meanwhile, in the girls 15-18 division, two players from the Thailand contingent are among the top three golfers after Thursday. Nicha Vorrasanpisut of Thailand (74-74) shares the lead with Sophie Guo of China (74-74), while Thai national team member Tunrada Piddon is third, one stroke back, after going 78-71.

The top Coloradan in the girls 15-18 division is Caroline Jordaan of Cherry Hills Village, who’s seventh at 153 (76-77).

The winners in the top boys and girls divisions will earn spots in the Junior PGA Championship, set for Aug. 9-12 in Rumford, R.I.

Marie Jordaan of Cherry Hills Village, Caroline’s sister, maintained her lead in the girls 12-14 division, going 80-81–161. That’s two better than Amisha Singh of Greenwood Village (83-80) in the four-player field.

In boys 12-14, Aaron Kuznik of Orono, Minn., kept his lead, posting rounds of 76-81 for a 13-over-par 157 total. That’s two better than Carson Hackmann of Laurel, Mont. (80-79–159) and six better than third-place Trey Jones of Colorado Springs (79-84–159)

For scores: boys 15-18, girls 15-18, boys 12-14, girls 12-14

The Colorado Junior Amateur Championship, a 54-hole stroke-play event, is scheduled for Monday through Wednesday (June 13-15) at Eisenhower Golf Club’s Blue Course at the Air Force Academy.

The Colorado Junior Amateur is an outgrowth of the CGA and CWGA Junior Stroke Play Championships.

Among those in the boys field will be several players who finished in the top 10 at this week’s AJGA Hale Irwin Colorado Junior at Highlands Ranch Golf Club: Trevor Olkowski of Grand Junction (second in AJGA), Timothy Amundson of Littleton (eighth) and David Leede of Greenwood Village (ninth).

Also entered is Coby Welch of Highlands Ranch, the 2015 CGA Junior Player of the Year, 4A state high school champion Jackson Solem of Longmont, and 2015 Colorado PGA Junior Champinship winner Cole Krantz of Windsor.

In the girls championship, Mary Weinstein of Highlands Ranch, the 2015 CWGA Junior Player of the Year, is entered. Weinstein won the final CWGA Junior Stroke Play and claimed the title last month in the 5A state high school championship. Also in the field are Amy Chitkoksoong of Aurora, the 2015 CWGA Junior Match Play winner and last month’s 5A state high school runner-up; Erin Sargent of Longmont, the 4A state champion and a 2015 U.S. Women’s Amateur qualifier; Caroline Jordaan of Cherry Hills Village, the 2015 Colorado PGA Junior Champion and last month’s 4A state high school runner-up; and Hailey Schalk of Erie and Lauren Lehigh of Loveland, like Jordaan posted top-10 finishes in the AJGA Hale Irwin Colorado Junior.

For Monday tee times, click on the following: BOYS, GIRLS