Jimmy Floyd Hasselbaink and Enrique de Lucas put Chelsea in the lead in their match against Viking.
But a last-minute goal from Ben Wright made it a less impressive win for The Blues at Stamford Bridge.
Leeds 1-0 Metalurg Zaporizhzhya
Leeds came out on top at Elland Road thanks to Michael Bridges.
Bridges, who came off the bench after his injury nightmare, set up Alan Smith, who scored the only goal of the match for United after 80 minutes.
Bridges has been out of action since October 2000 after an injury, but proved he is back on form.
Celtic 8-1 Sudova