Both things have come under some amount of criticism.
Simmons' Philadelphia 76ers are one game above.500, and would be considered a worthy replacement, should he be chosen; he would join Team LeBron.
Simmons is averaging 16.6 points, 7.9 rebounds and 7.3 assists this season, making a srtrong case for Rookie of the Year honours. He last week selected Oklahoma City Thunder forward Paul George to replace sidelined New Orleans Pelicans center DeMarcus Cousins.
NBA Commissioner Adam Silver has sole discretion when announcing All-Star Game replacements. It will be his second all-star appearance, having previously represented the Pistons in 2016.
Drummond famously expressed his disappoitment on Twitter after missing out on selection, putting up one of the great "snub" games immediately afterwards, piling on 30 points 24 rebounds, four assists, three steals and five blocks against the Utah Jazz. The Hornets have a week off from games for the All-Star break, and typically players make vacation plans, so there is a sense of urgency to get a commitment to replace an injured All-Star. James and Westbrook are also the only two players to do that for a full season at all in the last 10 years.
Drummond was tagged a game-time decision after coming down with an illness.
Named as Eastern Conference reserves were Love, Beal, Kristaps Porzingis, Kyle Lowry, Wall, Al Horford and Victor Oladipo. The Heat remain as the the only team among the top eight in the Eastern Conference without an All-Star.
Brown now is Boston's second-leading scorer behind Kyrie Irving at 14.1 points per game - ahead of Rookie of the Year candidate Jayson Tatum and All-Star Al Horford - so the Pistons big man might be a little off base there.