Duke will host Nebraska, Old Dominion, and Gonzaga.
It was the first such career honor for all four.
Five singles players and two doubles tandems made the poll.
The pair became the fourth Duke pair to reach the semifinals.
The pair are the first Duke duo to reach the round since 2014.
The pair advanced with a 7-5, 6-2 win.
Chen earns All-America honors in singles while McCarthy and Hamlin won their doubles match.
The honor was announced by the International Tennis Association on Wednesday.
The pair moved onto the Round of 32 with wins on Wednesday.
Singles play starts on Wednesday, followed by doubles on Thursday.
The ITA announced its regional awards on Monday.
The Blue Devils fell to Stanford 4-2.