Nate Lashley completed an unlikely wire-to-wire victory in the Rocket Mortgage Classic on Sunday for his first PGA Tour title.

Lashley closed with a 2-under 70 to finish at 25-under 263 and win by six shots, the margin he took into the day after opening with rounds of 63, 67 and 63.

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Nate Lashley drives from the ninth tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley completed an unlikely wire-to-wire victory in the Rocket Mortgage Classic on Sunday for his first PGA Tour title.
Nate Lashley watches his approach shot onto the seventh green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

The 353rd ranked player in the world slipped into PGA Tour's first event in Detroit as an alternate Wednesday.
Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)
Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)
Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)
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Nate Lashley drives from the ninth tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley completed an unlikely wire-to-wire victory in the Rocket Mortgage Classic on Sunday for his first PGA Tour title.

Nate Lashley watches his approach shot onto the seventh green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

The 353rd ranked player in the world slipped into PGA Tour's first event in Detroit as an alternate Wednesday.

Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

The 36-year-old Lashley's parents and girlfriend were killed in a plane crash 15 years ago. He dabbled in real estate after graduating from the University of Arizona, quit playing professional golf several years ago and resumed playing in the PGA Tour's minor leagues.

Nate Lashley drives from the ninth tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley drives from the ninth tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

The 353rd ranked player in the world slipped into PGA Tour's first event in Detroit as an alternate Wednesday.

Monday qualifier Doc Redman shot a 67 to finish second. Rory Sabbatini (68) and Wes Roach (68) were another stroke back.

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Nate Lashley watches his approach shot onto the seventh green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley watches his approach shot onto the seventh green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

 Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley drives on the second tee during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

 Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley hits from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

 Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)

Nate Lashley watches his hit from the gallery onto the second green during the final round of the Rocket Mortgage Classic golf tournament, Sunday, June 30, 2019, in Detroit. (AP PhotoCarlos Osorio)