Santiago Solari described Sergio Ramos' latest red card as an "occupational hazard" after the Real Madrid captain was sent-off in their home LaLiga loss to Girona.
Ramos was dismissed in the last minute of Sunday's 2-1 victory for relegation-threatened Girona at the Santiago Bernabeu.
The Spain defender earlier conceded a penalty for handball, for which he was booked, and was shown a second yellow after catching a Girona defender with a high boot in the process of attempting an overhead kick.
It ended a controversial week for Ramos, who backtracked on suggestions he deliberately received a booking in Madrid's 2-1 win at Ajax in the first leg of their last-16 Champions League tie so he would be available for the quarter-finals, should the holders progress.
Ramos has now been sent-off 20 times in LaLiga, more than any other player in the history of the competition, but Solari would not criticise his skipper.
"They are occupational hazards," Solari told a news conference when asked about Ramos being sent off.
15 - No LaLiga team scored more headed goals than Real Madrid in all competitions this season.
