Rohan Dennis rode to victory in Stage 4 of the USA Pro Challenge on Thursday, grabbing the overall lead by adding his name to the list of BMC Racing riders to capture a stage.
Dennis managed to open a gap on a select bunch on the downhill into Breckenridge, and wound up holding off Robbie Squire and teammate Brent Bookwalter by 19 seconds.
Bookwalter dropped to second in the overall standings. Squire is third.
The seven-day race stays in Breckenridge for Friday's fifth stage, an 8.5-mile time trial in which Phinney figures to be among the favorites.
The women also get into the act with a time trial over the same course, their first stage of the USA Pro Challenge. The three-stage women's race also concludes Sunday.