Luis Suárez is close to full fitness ahead of Uruguay's second World Cup match, which will be a critical game against England.
Suárez is doing triple shifts during training to regain full fitness.
Suárez is recovering from keyhole surgery to his left knee.
Óscar Tabárez, the Uruguay coach, may decide not to risk Suárez from the start against Costa Rica and instead introduce him as a substitute to help his preparation for their second Group D game, the meeting with England on 19 June in São Paulo.