Is it permissible for someone who has a football match to leave the prayer in the mosque after the Adhan or Iqamah to pray with his group on the field, and does the second congregation receive the same reward as the first congregation?

If you find a strong smell of sweat that harms worshipers in the mosque, and it is difficult for you to remove it, then it is disliked for you to enter the mosque. Rather, it is forbidden according to the Malikis, due to harming the angels and human beings. This includes every foul smell in the body or clothes. And it is an excuse for not attending the congregation in the mosque, unless one intends for that to happen, unless removal becomes easy. It is better for you to pray in the stadium after the training has stopped and enough time has passed for the smell to weaken.