Hyun-Jin Ryu started the season with two goals: to win 10 games and be named the National League rookie of the year.

Ryu reached the first of those goals Friday as he improved to 10-3 in the Dodgers' 6-2 victory over the Chicago Cubs at Wrigley Field. Ryu gave up 11 hits over 51/3 innings but was charged with only two runs. He struck out six.

"My new goal now is reaching 11 wins" Ryu said through an interpreter.

The last Dodgers rookie to win 10 or more games was Kazuhisa Ishii in 2002.

As far as Ryu's rookie-of-the-year candidacy it has the backing of Manager Don Mattingly.

"I think he should be considered" Mattingly said.

Ryu has won his last four decisions and the Dodgers have won the last seven games that he has started. Ryu's most recent loss was June 19 in New York against the Yankees.

"I think he's been underrated" Mattingly said. "I don't hear a lot of people talking about him."

Mattingly said Ryu probably has been overshadowed by rotation mates Clayton Kershaw and Zack Greinke as well as fellow Dodgers rookie Yasiel Puig.

Ryu conceded that he wasn't particularly sharp on this day.

"It was a tough battle early on" he said.

Ryu has failed to complete six innings in three of his last four starts.

Even though he is pitching once every five days for the first time in his career - he used to pitch once a week in his native South Korea - Ryu said the shorter starts aren't a result of fatigue. Rather he thinks it's a reflection of problems with his command as well as new approaches taken by opposing hitters.