▁the ▁rest ▁of ▁the ▁six ▁original ▁cast m ates , ▁Justin ▁Ch amb ers , ▁Ch andra ▁Wilson , ▁and ▁James ▁Pick ens ▁Jr ., ▁ex cluding ▁Sand ra ▁Oh , ▁had ▁renew ed ▁their ▁contract s ▁for ▁another ▁two ▁seasons ▁( 1 1 ▁and ▁ 1 2 ). ▁S ara ▁Ram ire z ▁also ▁renew ed ▁her ▁contract ▁for ▁another ▁two ▁seasons . ▁ ▁Development ▁Grey ' s ▁An atom y ▁was ▁renew ed ▁for ▁a ▁t enth ▁season ▁on ▁May ▁ 1 0 , ▁ 2 0 1 3 . ▁This ▁season ▁is ▁to ▁include ▁the ▁ 2 0 0 th ▁episode ▁of ▁the ▁series , ▁the ▁fourth ▁episode ▁to ▁air , ▁" P utt in ' ▁on ▁the ▁R itz ". ▁This ▁season ▁was ▁also ▁split ▁into ▁two ▁batch es ▁of ▁episodes , ▁each ▁batch ▁consisting ▁of ▁ 1 2 ▁un inter rupted ▁episodes ▁( ex cluding ▁hol id ays ). ▁The ▁mid - season ▁premi ere ▁a ired ▁on ▁February ▁ 2 7 , ▁ 2 0 1 4 . ▁ ▁Re ception ▁ ▁Rat ings ▁Grey ' s ▁An atom y ' s ▁t enth ▁season ▁opened ▁up ▁to ▁ 9 . 2 7 ▁million ▁view ers ▁with ▁a ▁ 3 . 4 / 9 ▁N iel sen ▁rating / share ▁in ▁the ▁ 1 8 – 4 9 ▁dem ographic . ▁" Every body ' s ▁Cry ing ▁Mer cy " ▁served ▁as ▁the ▁season ' s ▁most ▁viewed ▁episode . ▁" Man ▁on ▁the ▁Moon "