Jennings played in the NBA from 2009-2018, and since retiring, he has become a recent mainstay on the “Gil’s Arena” podcast with fellow NBA alum Gilbert Arenas. On an episode earlier this week, Jennings mused about Tatum’s toughness, asking if Tatum is the “softest” superstar in Celtics history. The comment went viral, and soon enough Tatum responded on Instagram. The Celtics forward is usually reserved online and in person, but he took a direct shot at Jennings, posting a number of photos and videos with the playful caption “SoFtesT SuPeRstar in CeLtiC HiStoRy” and an emoji.