Before heading to NFL Combine in Indianapolis later this week, two of the top quarterback prospects have made a detour to Ann Arbor, Mich.

Jameis Winston, who many believe will be the No. 1 pick in the draft, as well as Bryce Petty, were on the Michigan campus Tuesday preparing for the combine with new Wolverines coach Jim Harbaugh.

Winston and Petty had been working out with noted quarterback guru George Whitfield Jr. in San Diego before traveling to Ann Arbor. Whitfield, according to reports, went with Winston and Petty to Michigan.

The quarterbacks wanted to get acclimated to the time and weather, and throw in an indoor facility before going to Indianapolis, according to reports.

Harbaugh played 14 seasons in the NFL and earned a reputation of being able to develop quarterbacks. During his four years as head coach of San Francisco, he evaluated players at the Combine for the 49ers.