Nelson, the second-winningest coach in NBA history, missed
Thursday night's game at home against the Los Angeles Lakers, who defeated the Mavs 100-95.
Nelson also missed the Mavericks' 112-110 victory at Milwaukee and is not expected to coach the team Sunday at Minnesota. He's expected to return for Tuesday night's home game against the Timberwolves.
Johnson is being groomed to become Nelson's successor. He has run
most practices this season and has coached several games, sometimes
with Nelson serving as an assistant. Johnson also had a 10-game
stint in charge while Nelson was out following shoulder surgery.
The Mavs went 7-3 in that span.