PETR CECH IS OUT FOR 3-4 WEEKS - WENGER

LONDON -- Arsenal goalkeeper Petr Cech will miss three to four weeks with a "serious calf injury," Arsene Wenger has said.
Cech, 33, was injured in the last moments of Wednesday's 2-1 loss to Swansea when he ran up the pitch for a late corner as the Gunners pushed for an equaliser.
Wenger had already said Cech would miss Saturday's crucial North London derby against Tottenham, but revealed on Friday that he could be out for up to a month.
Wenger said Cech also had a minor groin injury before the game that may have hampered him as well, but that he did not regret the decision to play the keeper.

TEAM NEWS: "@PetrCech is out and @6_LKOSCIELNY is not back. Cech will be three or four weeks with a calf injury." https://t.co/fh4FyeG5tv

- Arsenal FC (@Arsenal) March 4, 2016

"He declared himself 100 percent fit [before the game], and then you have to trust the player," Wenger told a news conference. "He's 33 years old, and he knows his body."
Cech's injury means David Ospina is set to play in some of Arsenal's most important games of the season, including the round-of-16 second leg against Barcelona in the Champions League later this month.
However, the Arsenal manager said he has full confidence in his backup goalkeeper.
"If you look at the win-rate of Ospina, it's very good as well. So honestly, I'm not worried at all about that," Wenger said.

Gunners centre-back Laurent Koscielny will also miss the Tottenham game with a calf injury but is expected back next week, Wenger said.