Diego Simeone refused to criticise Filipe Luis and Diego Godin after the Atletico Madrid pair received red cards in Saturday's 2-1 defeat at title rivals Barcelona.
Luis was sent off for a first-half challenge on Lionel Messi described by Barca coach Luis Enrique as "shocking".
Godin received a second caution for a late challenge on Luis Suarez, who earlier scored the winning goal.
Atletico coach Simeone said: "I have nothing to reproach them for."
Even with nine men Atletico were not overwhelmed by the champions but Simeone admitted Barcelona may be difficult to catch in the title race.
He added: "They have players who decide games, a three-point lead, and a game to play. The league is long, but they don't stumble very much.