Mamelodi Sundowns FC suffered a 4-3 loss to Borussia Dortmund in the FIFA Club World Cup group stage on Saturday. The match was played in blistering heat at TQL Stadium, with temperatures approaching 90 degrees Fahrenheit. The Sundowns opened the scoring early on an impressive break away that Lucas Ribeiro Costa finished in the 11th minute. However, Dortmund evened the score in the 16th minute when Sundowns goalie Ronwen Williams inadvertently passed to Dortmund's Felix Nmecha right in front of the net. Dortmund increased its lead to 3-1 at halftime with goals from Serhou Guirassy and Jobe Bellingham. The Sundowns scored two straight goals in the second half, but it wasn't enough to overcome the mistakes. Iqraam Rayners scored a double-header, and Lebo Mothiba added another goal in the 90th minute. Despite the loss, Mamelodi Sundowns FC will face Fluminense on Wednesday in a critical match. Borussia Dortmund will meet Ulsan on the same day. The Sundowns' rally in the second half was impressive, but the team's mistakes ultimately cost them the match. The heat and humidity at TQL Stadium made the match even more challenging for both teams. Mamelodi Sundowns FC's coach will need to regroup and prepare the team for the upcoming match against Fluminense. The Sundowns' fans will be hoping for a better outcome in the next match. The team's performance in the FIFA Club World Cup has been impressive so far, and they will be looking to bounce back from this loss. The match against Fluminense will be a tough one, but Mamelodi Sundowns FC has the talent and determination to win. The Sundowns' players, including Lucas Ribeiro Costa and Iqraam Rayners, will need to be at their best if they want to succeed in the tournament.