Mathias Gronberg plays the Titleist Pro V1.
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The 25: Mathias Gronberg (:38)
Gronberg fires an opening 66 to tie for the early lead at the 2009 St. Jude Classic (1:21)
Gronberg wins Melwood Prince George's County Open (1:24)
Gronberg extends lead at Melwood Prince George's County Open (:45)
Gronberg on his 5-under par second round at the 2009 Valero Texas Open (1:20)
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