In 2016, Langer claimed the Regions Tradition title for his sixth senior major championship. He won by a six stroke margin over Olin Browne. This was his 100th professional win and the first time Langer had won the title. His capture of the 2017 Senior PGA Championship completed a career Grand Slam. The Regions Tradition title had also made him only the second golfer, after Jack Nicklaus, with wins in four different senior major championships. Later in 2016 he wrote history by becoming the first three-time winner of the Constellation Senior Players Championship and wins it for third straight year. The result also meant that only Nicklaus had won more senior majors than Langer. In November, he won his fourth Charles Schwab Cup and his third in a row.