Nearly two dozen celebrities and VIPs attended Game 3 of the NBA Finals at TD Garden on Wednesday.
Walton, who won a title with the Celtics in 1986, was spotted taking the MBTA's Orange Line to TD Garden.
Once outside the Garden, Walton received a warm welcome from Celtics fans.
Pierce, who helped Boston win its most recent title as MVP of the 2008 NBA Finals, shared a photo of himself next to a 2022 NBA Finals logo inside a tunnel at TD Garden.
New England Patriots owner Bob Kraft and head coach Bill Belichick were at TD Garden supporting the hometown team
Grammy Award-winning rapper and singer Nelly performed at halftime of Game 3.
Other musical artists who were at TD Garden for the game include Boston native Michael Bivins, Jadakiss, Millyz and Michelle Brooks-Thompson,