Ellsbury, fresh off winning his second World Series ring with the Red Sox, agreed to a $153 million deal with New York last week. The contract includes a $21 million team option for the 2021 season, with a $5 million buyout. If the option is exercised, the deal would be worth $169 million over eight years.
The ad shows Ellsbury hoisting the World Series trophy and is addressed to "Red Sox Nation."
"Two World Championships and seven years of great memories," the ad reads. "To the fans of New England, teammates and the many friendships made. Thank you!"
Ellsbury, who turned 30 in September, led the majors with 52 stolen bases despite being hobbled late in the season by a broken right foot. The lefty-hitting leadoff man batted .298 with nine homers and 53 RBIs, and the short right-field porch at Yankee Stadium should boost his power numbers.
Information from the Associated Press was used in this report.