Last updated on .From the section European Football

Ramos was booked in the 89th minute against Ajax

Uefa is investigating comments from Real Madrid defender Sergio Ramos after it was suggested he was booked on purpose late in Wednesday's Champions League last-16 first leg at Ajax.

Ramos fouled Kasper Dolberg in the 89th minute with Real leading 2-1, earning a suspension for the second leg.

A player who purposely obtains a booking can be banned for two games.

Ramos said suggestions he intentionally played for the yellow card "hurts", tweeting external-link "I have not forced the card".

Earlier Ramos had told reporters external-link he would "be lying if I said I didn't force [the booking]".

On Thursday, Uefa said: "A disciplinary inquiry has been opened in connection with the statements made by Real Madrid player Sergio Ramos."

The Spain international was making his 600th appearance for Los Blancos and his side secured a first-leg advantage through Marco Asensio's goal two minutes before the controversial booking.

Pundit Martin Keown said it was "very obvious" Ramos was looking to pick up a third booking in the competition to be banned for the second leg - a suspension at this stage greatly reduces the risk of missing a match later in the competition with all bookings wiped following the quarter-final stage.

"In a game there are many tensions, many sensations and many pulsations," Ramos tweeted. "You have to make decisions in seconds. The best of today is the result. The worst, not being able to be with my team-mates for a game."

Ramos' team-mate Dani Carvajal received a two-game ban from Uefa when he was judged to have been booked on purpose in the final minute of a 6-0 win over Apoel Nicosia in last season's tournament.

Ramos and former Real midfielder Xabi Alonso were both booked late on in a 3-0 quarter-final first-leg victory over Galatasaray in 2013.

Both players were also criticised in 2010, when they were booked and sent off in the final five minutes of a group game with Ajax, meaning they missed the next fixture, with Real already assured of progress to the knockout stage.