Past champions Nick Price, Bernhard Langer and Glen Day also have made early commitments, tournament director Steve Wilmot said.
Love, who won his first tour event at Hilton Head in 1987, also has won in 1991, 1992 and 1998. Price won the tournament in 1997 and Bernhard Langer, the only player to win the Masters and MCI Heritage in consecutive weeks, won in 1985.
Day made a 35-foot birdie putt on the first playoff hole in 1999 to grab the title.
The tournament takes place April 15-18 at Harbour Town Golf Links.
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