She scored 25 points to help the Indiana Fever win its first title with an 87-78 victory over the Minnesota Lynx Sunday night.
Catchings, who was the MVP of the Finals, averaged 24.8 points in the series, which the Fever won 3-1 over the defending WNBA champions.
"It's been an amazing journey," Catchings said, tearing up. "We've had ups and downs, ins and outs."
Erin Phillips added 18 points and eight rebounds and Shavonte Zellous and Briann January each had 15 points.
Catchings had won three Olympic gold medals and an NCAA championship at Tennessee in 1998, but never a WNBA one.
She had been in a position to clinch at home before.
The Fever led Phoenix 2-1 in the best-of-five WNBA Finals in 2009, but the Mercury beat the Fever, 90-77, took the series back to Phoenix and won the title at home in Game 5.
This time, Catchings took it home with college coach Pat Summitt looking on in the crowd.
Minnesota was vying to become the first team to win consecutive titles since Los Angeles in 2001 and 2002.