Kershaw throws on flat ground, bullpen likely by weekend

PHOENIX (AP) Clayton Kershaw threw aggressively off flat ground on Tuesday but Los Angeles manager Dave Roberts says the team will take a cautious approach to the Dodgers' ace's return to the rotation.

Roberts said Kershaw ''stretched out a little bit'' with his throwing at Chase Field before Tuesday night's game against the Arizona Diamondbacks and will do the same on Wednesday.

A bullpen session ''in the next few days makes sense,'' Roberts said, but probably won't occur until the team returns to Los Angeles for a weekend series against San Diego.

Kershaw has been sidelined with a back injury since July 23,

Roberts said there is no timetable for the left-hander's return and said the two have talked about Kershaw needing four or five starts to be ready for the postseason.

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