Dessens, 33, was acquired Aug. 19 from Arizona for minor leaguers Jereme Milons to provide long relief and he started the National League West-clinching game against San Francisco, pitching four strong innings. Dessens was 1-0 with a 3.20 ERA in 12 games for the Dodgers. He allowed opponents a .219 batting average.
The club held an option on Dessens for 2005 for $4.5 million or a buyout of $300,000, which was paid by Arizona as part of the terms of the trade.
Flores, 31, was purchased from Oakland during Spring Training and provided middle-infield insurance.
He played nine game with the Dodgers late in the season and had one hit in four trips to the plate. At Las Vegas he hit .313 over 99 games with seven homers and 51 RBI.