Chelsea reached the last 16 of the Champions League on Tuesday after a late Olivier Giroud strike gave the Blues a 2-1 win over Rennes. France forward Giroud's powerful header snatched the points for Frank Lampard's side after Serhou Guirassy had levelled Callum Hudson-Odoi's first-half opener. Chelsea have been joined in the next round by Group E rivals Sevilla after the Spanish side's 2-1 win at Krasnodar. td/jc