SAN DIEGO -- The Los Angeles Dodgers have discovered a few things about Hyun-Jin Ryu over the past two seasons since they signed him to a record $36 million contract for a Korean player. The most important lesson has been that less is more.They fought him for a while on whether to throw bullpen sessions between starts but gave that one up early in 2013. The less they ask of him, the more Ryu seems to provide, with an almost effortless air.For the second time this season, Ryu came off the disabled list after skipping the usual minor league rehab assignment and pitched reliably, going seven strong innings Sunday in the Dodgers' 7-1 win over the San Diego Padres here.