British number two Cameron Norrie is through to the quarter-finals of the Delray Beach Open in Florida after beating French fifth seed Arthur Rinderknech.
The 29-year-old came out on top in a lengthy first-set tie-break but dominated in the second to win 7-6 (11-9) 6-2.
Norrie, the 2022 winner, is unseeded at the tournament having dropped to 61 in the world rankings.
He needed just over two hours to beat Rinderknech in a gruelling match in the Florida heat.
Norrie will face American qualifier Michael Mmoh or Alex Michelsen, seeded third, in the last eight.