By Mike McDaniel A friendly wager led to a jersey exchange following the Grizzlies’ series-clinching win over the Timberwolves on Friday night. After the Grizzlies knocked off the Timberwolves on Friday night to advance to the second round of the playoffs, it was time for bets to be settled up. And no, not just bets placed on the game or on the series itself, but also on friendly wagers between players and relatives. This included a bet between Grizzlies star Ja Morant’s dad and the father of Timberwolves star Karl-Anthony Towns. Towns’s dad is seen approaching Morant after the game, when Mora…