Sam Querrey returns a shot to Kei Nishikori, of Japan, in a semifinal round tennis match at the Memphis Open, Saturday, Feb. 14, 2015, in Memphis, Tenn. (AP Photo/Mark Humphrey)
Mark Humphrey
February 17, 2015

DELRAY BEACH, Fla. (AP) Sam Querrey, a semifinalist last week in Memphis, injured his back mid-match and retired from the Delray Beach Open while leading Alejandro Gonzalez of Colombia 6-3, 1-2 on Tuesday.

The sixth-seeded Querrey was serving at 30-40 when he bent low for a backhand volley, made the shot and then clutched his lower back. After attempting to stretch for a moment, Querrey asked for the trainer and left the court for treatment. After nearly nine minutes, the 27-year-old American, a semifinalist here in 2008, returned, shook his opponent's hand and conceded the match.

Two Americans advanced to the second round. Tim Smyczek beat 17-year-old wild card Stefan Kozlov 7-5, 6-2, while seventh-seeded Steve Johnson advanced when Mikhail Kukushkin of Kazakhstan retired because of illness while down 6-3, 4-1.

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HOLE YARDS PAR R1 R2 R3 R4
OUT
HOLE YARDS PAR R1 R2 R3 R4
IN
Eagle (-2)
Birdie (-1)
Bogey (+1)
Double Bogey (+2)