Andrew Landry regroups to win The American Express

Andrew Landry watches his birdie putt fall in the 18th hole during the final round to win The American Express golf tournament on the Stadium Course at PGA West in La Quinta, Calif., Sunday, Jan. 19, 2020. (AP Photo/Alex Gallardo)

Andrew Landry, left, celebrates with his caddie Terry Walker after winning The American Express golf tournament on the Stadium Course at PGA West in La Quinta, Calif., on Sunday. (AP Photo/Alex Gallardo)

Andrew Landry reacts after a birdie putt on the 18th hole to win The American Express golf tournament on the Stadium Course at PGA West in La Quinta, Calif., Sunday, Jan. 19, 2020. (AP Photo/Alex Gallardo)
Andrew Landry, left, greets his son, Brooks Landry, on the 18th hole after winning The American Express golf tournament on the Stadium Course at PGA West in La Quinta, Calif., Sunday, Jan. 19, 2020. (AP Photo/Alex Gallardo)

LA QUINTA, Calif. — Andrew Landry regrouped to win The American Express after blowing a six-stroke lead on the back nine Sunday.