LIMA, July 9 (Reuters) - A last-minute header by substitute Edixon Perea gave Colombia a 1-0 win over Bolivia on Friday, putting the defending Copa America champions into the

quarter-finals with maximum points from their first two games.

Perea, recently promoted from the under-20 national team,

outjumped the Bolivia defence to send a looping header into the

goal 13 minutes after coming on in the Group A match.

The result was harsh on a Bolivian side that had little

possession but marked their opponents very closely, pulling back

almost all of their players into their own half most of the game

to frustrate the Colombian attack.

Bolivia, who drew 2-2 with hosts Peru in their first match

despite being considered the tournament's weakest team, again

showed they were no pushovers, attacking with confidence in the

second half.

Their best chance came when midfielder Limberg Gutierrez's

shot was cleared off the line just after the break.

Colombia striker Tressor Moreno linked well with playmaker

David Ferreira throughout the match, but the shot-shy pair had

nothing to show for their quick passing moves.

Moreno's best chance came in the 60th minute after a

exchanging passes with fellow striker Sergio Herrera, but he

ballooned his shot over the bar from close range.

Bolivia's veteran captain Luis Cristaldo - a survivor from

the 1994 World Cup team - made an early exit after he was

injured in midway through the first half.