Five players to watch at this weekend's Senior British Open:

Tom Watson
His major breakthrough came 35 years ago at Carnoustie, where he captured his first of five British Opens and eight major championships. Success has followed him on the Champions Tour, where Watson, 60, has won three British Seniors.

Loren Roberts
The defending champion seeks his fifth Champions Tour major and third British Senior title. Previous British wins came at Turnberry (2006) and Sunningdale (2009), both via playoff. Roberts has been in the top five in his last three Champions Tour starts.

Senior British OpenWhere » Carnoustie, Scotland.Course » Carnoustie Golf Links (par 71)When » Thursday-SundayTV » ESPN - Thu.-Fri., noon-2 p.m.; Sat., 2-3:30 p.m.; Sun., 1-3 p.m.Defending champion » Loren Roberts

Tom Lehman
He’s coming off a stellar showing at St. Andrews (T14), where he had the best score among players 50-and-over. Lehman, 51, seeks his second Champions Tour major after winning the 2010 Senior PGA in a playoff over Fred Couples.

Fred Funk
Funk is seeking his third Champions Tour major and first British Senior title. He lost in a playoff to Loren Roberts last year at Sunningdale. Funk’s runner-up finish last month at Dick’s Sporting Goods was his best finish since offseason knee replacement.

Bernhard Langer
Despite leading the tour in money the last two years, winning 10 events and two Champions Tour player of the year awards, Langer, 52, has never captured a Champions Tour major. He finished fourth in the last two British Seniors.