Memphis Grizzlies rookie big man Jaren Jackson Jr. has suffered a right quad injury and will be sidelined for the foreseeable future, according to Adrian Wojnarowski of ESPN.

The Grizzlies, who have one of the worst records in the NBA, will smartly be cautious with their promising young stud.

In 58 games this season for the Grizzlies, Jaren Jackson Jr. is averaging 13.8 points, 4.7 rebounds, 1.1 assists and 1.4 blocks per contest while shooting 50.6 percent from the field, 35.9 percent from beyond the arc and 76.6 percent from the free-throw line.

The fourth overall pick in the 2018 NBA Draft out of Michigan State University, Jackson Jr. has two double-doubles this season. He played 15 minutes in the 2019 Rising Stars challenge last weekend in Charlotte.

The Grizzlies traded Marc Gasol to the Toronto Raptors at the trade deadline. Mike Conley is still on the roster, but it's clear the organization is going to build around Jaren Jackson Jr. now. In a rebuild season, there's no point for Memphis to play Jackson Jr. if he's not 100 percent. The rookie has already proven his worth this season and has all the skills to be an All-Star big man for years to come.