Ricky Castillo, 20, Yorba Linda, Calif.
-No. 10 in the latest World Amateur Golf Ranking®
-Completing his sophomore season at the University of Florida
-Named 2019-20 Phil Mickelson Award winner for being nation's top freshman
-Named first-team All-American
-Competed in 2020 U.S. Open
-Member of 2020 USA Palmer Cup Team
-Competed in three U.S. Amateurs, reaching the Round of 16 at Pinehurst in 2019
-Competed in three U.S. Junior Amateurs, advancing to the Round of 16 twice and sharing medalist honors with William Moll and 2021 USA Walker Cup teammate William Mouw in 2019 at Inverness Club
-Advanced to the semifinals of the 2020 Western Amateur
-Has won two collegiate tournaments in 2019-20 season
-First-team All-Southeastern Conference selectionPierceson Coody, 21, Plano, Texas
-No. 2 in the latest World Amateur Golf Ranking®
-Completing his junior season at the University of Texas
-Won the 2020 Western Amateur, defeating Rasmus Neergaard-Petersen, 2 and 1, in the 18-hole final
-Plays at Texas with twin brother, Parker
-Grandson of 1971 Masters champion Charles Coody
-Won 116th Trans-Mississippi Amateur in 2019 at Maridoe Golf Club in Carrollton, Texas by two strokes, joining a list of champions that includes Jack Nicklaus, Ben Crenshaw and 2020 U.S. Open champion Bryson DeChambeau
-Advanced to the Round of 16 in the 2019 U.S. Amateur at Pinehurst
-Member of the 2020 USA Palmer Cup Team
-Earned All-Central Region honors last season for the LonghornsQuade Cummins, 25, Weatherford, Okla.
-No. 16 in the latest World Amateur Golf Ranking®
-Fifth-year senior at the University of Oklahoma
-Runner-up to USA Walker Cup teammate Cole Hammer in 2021 Big 12 Conference Championship at Prairie Dunes C.C.
-Named first-team All-America in COVID-19-shortened 2019-20 season
-Compted in the last three U.S. Amateur Championships
-Finished third in the 2020 Southern Amateur with a 5-under total of 283
-Tied for fourth in the 2020 Sunnehanna Amateur
-In December, he made the 36-hole cut in the PGA Tour's Mayakoba Golf Classic in Mexico
-Won the 2019 Pacific Coast Amateur by four strokes with a 20-under total of 264
-Member of 2019 and 2020 USA Palmer Cup TeamsAustin Eckroat, 22, Edmond, Okla.
-No. 11 in the latest World Amateur Golf Ranking®
Completing his senior season at Oklahoma State University
-Named second-team All-American as a junior in COVID-shortened 2019-20 season
-Three-time All-Central Region and All-Big 12 Conference selection
-Qualified for the 2019 U.S. Open at Pebble Beach (Calif.) Golf Links
-Has competed in four U.S. Amateurs, qualifying for match play in 2019 at Pinehurst
-Tied for sixth in 2020 Southern Amateur
-Advanced to the quarterfinals of the 2017 U.S. Junior Amateur at Flint Hills National Golf Club outside of Wichita, Kan., losing to eventual runner-up and future Oklahoma State teammate Matthew Wolff (also 2020 U.S. Open runner-up); Eckroat was the medalist in stroke play
-Finished T-12 last December in PGA Tour's Mayakoba Classic in Mexico with a 14-under score of 270
-Runner-up in the Maridoe Collegiate Invitational in fall of 2020Stewart Hagestad, 30, Newport Beach, Calif.
-No. 17 in the latest World Amateur Golf Ranking®
-Competing on his third USA Walker Cup Team; played on victorious sides in 2017 at The Los Angeles Country Club, where he holds a junior membership, and 2019 at Royal Liverpool (Hoylake)
-Went 1-1 in 2017 (both singles matches), losing to Jack Singh Brar on Saturday and winning his Sunday match, 2 and 1, as the USA posted a 19-7 victory to regain the Cup
-Posted a 1-1 foursomes (alternate-shot) mark in 2019 Match with partner Akshay Bhatia as they formed the youngest and oldest duo; also won his Sunday singles match over Harry Hall (5&3) as the USA rallied for a 15.5-10.5 win
-Has qualified for three U.S. Opens
-Advanced to the quarterfinals of the 2020 U.S. Amateur at Bandon Dunes, losing to eventual champion, Tyler Strafaci, 1 down
-Claimed 2016 U.S. Mid-Amateur with a historic rally over 2014 champion Scott Harvey, taking four of the last five holes in regulation before making a 15-foot birdie putt on the 37th hole; largest comeback since 36-hole final was introduced in 2001
-Earned low-amateur honors in the 2017 Masters, becoming the first invited U.S. Mid-Amateur champion to make the 36-hole cut
-Won a gold medal in the mixed team competition at the 2019 Pan-American Games in Lima, Peru with teammates Brandon Wu, Emilia Migliaccio and Rose Zhang (finished T-13 in the individual competition)
-Graduate of the University of Southern CaliforniaCole Hammer, 21, Houston, Texas
-No. 14 in the latest World Amateur Golf Ranking®
-Member of the victorious 2019 USA Walker Cup Team at Royal Liverpool (Hoylake), where he went 1-2, posting a Sunday singles victory Conor Purcell (6&5) as the Americans rallied for a five-point win
-Completing his junior season at the University of Texas
-Captured the 2021 Big 12 Conference individual title at Prairie Dunes C.C. by one stroke over USA Walker Cup teammate Quade Cummins
-Hammer played a key role in the Longhorns' run to the championship match of the 2019 NCAA Championship
-Teamed with Garrett Barber to win the 2018 U.S. Amateur Four-Ball Championship at Jupiter Hills Golf Club in Florida
-Became the third-youngest player to qualify for the U.S. Open in 2015 at Chambers Bay at 15 years of age
-Has competed in 12 USGA championships, including a pair of U.S. Opens
-Advanced to the semifinals of the 2018 U.S. Amateur at Pebble Beach (Calif.) Golf Links, a month after he reached the semis of the U.S. Junior Amateur at Baltusrol Golf Club in Springfield, N.J.
-Helped lead the 2018 USA Team to a runner-up finish in the World Amateur Team Championship in the Republic of Ireland
-Won the 2018 Western Amateur-Captured the 2020 South Beach International Amateur in December
-Tied for second in the Jones Cup Invitational in FebruaryWilliam Mouw, 20, Chino, Calif.
-No. 34 in the latest World Amateur Golf Ranking®
-Completing his sophomore season at Pepperdine University
-As a freshman in 2019020, named first-team All-American and All-West Region in the COVID-shortened season
-Has competed in three U.S. Amateurs, advancing to the Round of 16 in 2018 at Pebble Beach (Calif.) Golf Links and 2020 at Bandon Dunes Golf Resort in Oregon
-Advanced to the Round of 32 in consecutive U.S. Junior Amateurs in 2018 at Baltusrol Golf Club in Springfield, N.J., and 2019 at Inverness Club in Toledo, Ohio
-Set Pepperdine freshman record with five top-10 finishes in 2019-20 season
-As a sophomore, also recorded a pair of top-10 finishes during the fall 2020 portion of the Waves' schedule
-Member of the 2020 USA Palmer Cup Team
-Won 2019 California State Amateur
-Competed on golf and basketball teams at Ontario (Calif.) Christian High School
-Son of a chicken egg farmerJohn Pak, 22, Scotch Plains, N.J.
-No. 4 in the latest World Amateur Golf Ranking®
-Member of victorious 2019 USA Walker Cup Team, posting a 3-0 record in the five-point win at Royal Liverpool (Hoylake); won both singles matches, defeating 2019 Amateur champion James Sugrue (1 up) on Saturday and Euan Walker (2&1) on Sunday
-Earned low-amateur honors in 2020 U.S. Open at Winged Foot Golf Club in Mamaroneck, N.Y. (T-51)
-Completing his senior season at Florida State
-Earned All-America and All-South Region honors for a third consecutive season in 2019-20
-Now tied for first on the school's all-time list with eight victories, including the 2019 Atlantic Coast Conference title; he matched the record in April with his one-stroke victory at the Calusa Cup in Naples, Fla.
-Has competed in four U.S. Amateurs, advancing to the Round of 16 in 2019 at Pinehurst
-Advanced to match play in all four U.S. Junior Amateur appearances, reaching the quarterfinals in 2015 and the semifinals in 2016Tyler Strafaci, 22, Davie, Fla.
-No. 9 in the latest World Amateur Golf Ranking®
-Claimed the 2020 U.S. Amateur at Bandon Dunes Golf Resort in Oregon last August, defeating Charles Osborne, 1 up, in the 36-hole final, rallying from 5 holes down; his last four matches were all 1-up decisions, the first time that has occurred in the championship
-Joined his grandfather, Frank Strafaci, as a USGA champion; Frank won the 1935 U.S. Amateur Public Links
-Frank Strafaci also claimed the 1938 and 1939 North & South Amateurs at Pinehurst
-Tyler followed Frank as a North & South champion last summer, defeating William Holcomb V, 3 and 1, in the 18-hole final
-Qualified for the 2018 U.S. Open at Shinnecock Hills Golf Club in Southampton, N.Y.
-Has competed in seven USGA championships, including four U.S. Amateurs
-As member of Georgia Tech program through December 2020, earned three All-East Region honors and was a two-time Atlantic Coast Conference performer
Davis Thompson, 21, St. Simons Island, Ga.
-No. 3 in the latest World Amateur Golf Ranking®
-Completing his senior season at the University of Georgia
-Nearly made 36-hole cut at 2020 U.S. Open at Winged Foot Golf Club in Mamaroneck, N.Y., carding a first-round 69
-Quarterfinalist in 2020 Western Amateur
-Advanced to match play in 2020 U.S. Amateur at Bandon Dunes Golf Resort in Oregon
-Names first-team All-American and first-team All-Southeastern Conference in COVID-shortened 2019-20 season
-Member of the 2020 USA Palmer Cup Team
-Has competed in a pair of PGA Tour events in 2020, tying for 23rd in the RSM Classic at Sea Island Golf Club with a 10-under total of 272
-Tied for second in the Jones Cup Invitational in February at Ocean Forest Golf Club in St. Simons Island, Ga., site of the 2001 Walker Cup Match