London, July 12 : Kate Upton has fuelled romance rumours after being spotted with baseball player Justin Verlander at an Aerosmith concert in Michigan last Thursday.

According to the Huffington Post, the 20-year-old Sports Illustrated model had been seen by many fans, watching the event from Verlander's private suit at the Palcace of Auburn Hills, the Daily Mail reported.

Inside, the pair were joined by Upton's best friend and fellow model Lizzy Glynn and Verlander's pal Frank Viola Jr.

Following the rock show, the friendly foursome went bar-hopping.

They started off at a bar with a mechanical bull and then headed towards Birmingham's South Bar.

The following night, dressed all in black and wearing a Detroit Tigers baseball cap, Upton had been seen jovially skipping into a private suite to watch the 29-year-old Detroit Tigers player play. (ANI)