DEARBORN, Michigan (Ticker) -- Mike McCullough and Hubert Green changed places on the leaderboard Saturday at the Senior Players Championship.

McCullough, who has only four top-10 finishes in 21 starts this year, carded a 5-under-par 67 to take a one-stroke lead over Green after three rounds of the year's final major at the TPC of Michigan.

The 57-year-old Scottsdale, Arizona native completed 54 holes at 12-under 204 and is seeking his first win since capturing the Emerald Coast Classic last season.

Green, who began the day with a three-shot lead over McCullough, continued his inconsistent play this week. After shooting a 71 on Thursday, Green tied a tournament record with a 63 on Friday, only to post another 71 on Saturday.

Still, he kept the pressure on McCullough with consecutive birdies on Nos. 16 and 17 that enabled him to finish the round under par.

Green won 19 times on the PGA Tour and has added three titles since joining the Senior Tour. But he never has won a major on the elder circuit.

On Sunday, McCullough and Green will play together for the second straight day. They will be joined in the final group by Australian Stewart Ginn, who is four shots off the pace following a 2-under 70.

Ray Floyd made the day's biggest gain, carding a 7-under 65 to climb from a tie for 27th to a tie for fourth at 209 with Doug Tewell, Larry Nelson and Hale Irwin.

Jim Thorpe, who won the Countrywide Tradition, the year's first major, jumped into the top 10 with a 5-under 67 that left him tied for eighth at 210 with Bob Murphy.

Howard Twitty began the day tied for second with McCullough and Irwin, but fell apart. He ballooned to a 5-over 77 that dropped him 10 shots off the lead.

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