Roger Maltbie may no longer compete on the PGA Tour, but three-time major winner Padraig Harrington believes that doesn't excuse him from the rules of golf.

Padraig Harrington and NBC reporter Roger Maltbie exchanged words at the U.S. Senior Open on Friday. Here's what triggered the squabble.

In a bizarre video that surfaced on Friday evening from the U.S. Senior Open in Colorado, Padraig Harrington could be seen getting into it with longtime NBC on-course analyst Roger Maltbie.

Padraig Harrington salvaged an up-and-down day with a chip-in birdie from 20 yards out on the 18th hole to pull back into a tie for the lead with Stewart Cink and Mark Hensby at the U.S. Senior Open.

Padraig Harrington and Stewart Cink endured the ups and downs of the U.S. Senior Open together for a second straight day Friday and found themselves tied for the lead.

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Padraig Harrington shares U.S. Senior Open lead despite losing ball in woods as Colorado course proves brutally challenging for field.

Search and annoy: Harrington, NBC's Maltbie caught in tiff over lost ball at US Senior Open A video of Padraig Harrington arguing with NBC reporter Roger Maltbie for not helping him look for a ...

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A video, which flooded social media, showed Harrington arguing with on-course reporter Maltbie for not helping him look for a lost ball during his opening round at Broadmoor Golf Club.

Padraig Harrington holds a share of the lead after the first round at the US Senior Open at Broadmoor Golf Club in Colorado Springs.