There will be a new champion at the BB&T Atlanta Open in 2012 after defending champ Mardy Fish was forced to retire in his match against Gilles Muller because of an ankle injury. Fish was on his way to a win taking the first set 6-4 and was leading the second 3-2 before being forced to retire.
Top seeded John Isner dropped the first set to Ruben Bemelmans 6-4 before rallying to take the last two sets 6-3 and 6-4. James Blake saw his run at the Atlanta Open come to an end with a loss to Matthew Ebden and wildcard Jack Sock stayed alive by defeating Steve Johnson.
Here is a look at the full results from Thursday's action at the BB&T Open:
 John Isner def [Q] Ruben Bemelmans 4-6, 6-3, 6-4
Matthew Ebden def James Blake 6-7(6), 6-4, 6-4
Gilles Muller def  Mardy Fish 4-6, 2-3 Ret'd
[WC] Jack Sock def [WC] Steve Johnson 7-6(5), 7-6(5)