<Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Episode </Th> <Th> Air date </Th> <Th> Time slot (EST) </Th> <Th> Rating / Share (18--49) </Th> <Th> Viewers (m) </Th> <Th> 18--49 Rank </Th> <Th> Viewership rank </Th> <Th> Drama rank </Th> </Tr> <Tr> <Td> 270 </Td> <Td> </Td> <Td> "Undo" </Td> <Td> September 22, 2016 (2016 - 09 - 22) </Td> <Td> Thursdays 8: 00 p.m. </Td> <Th> 2.5 / 9 </Th> <Th> 8.75 </Th> <Th> 12 </Th> <Th> 21 </Th> <Th> </Th> </Tr> <Tr> <Td> 271 </Td> <Td> </Td> <Td> "Catastrophe and the Cure" </Td> <Td> September 29, 2016 (2016 - 09 - 29) </Td> <Th> 2.4 / 9 </Th> <Th> 8.41 </Th> <Th> 13 </Th> <Th> 25 </Th> <Th> </Th> </Tr> <Tr> <Td> 272 </Td> <Td> </Td> <Td> "I Ain't No Miracle Worker" </Td> <Td> October 6, 2016 (2016 - 10 - 06) </Td> <Th> 2.2 / 8 </Th> <Th> 8.08 </Th> <Th> 10 </Th> <Th> 18 </Th> <Th> </Th> </Tr> <Tr> <Td> 273 </Td> <Td> </Td> <Td> "Falling Slowly" </Td> <Td> October 13, 2016 (2016 - 10 - 13) </Td> <Th> 2.1 / 8 </Th> <Th> 7.80 </Th> <Th> 13 </Th> <Th> 23 </Th> <Th> </Th> </Tr> <Tr> <Td> 274 </Td> <Td> 5 </Td> <Td> "Both Sides Now" </Td> <Td> October 20, 2016 (2016 - 10 - 20) </Td> <Th> 2.1 / 8 </Th> <Th> 8.17 </Th> <Th> 12 </Th> <Th> 21 </Th> <Th> </Th> </Tr> <Tr> <Td> 275 </Td> <Td> 6 </Td> <Td> "Roar" </Td> <Td> October 27, 2016 (2016 - 10 - 27) </Td> <Th> 2.2 / 8 </Th> <Th> 8.17 </Th> <Th> 14 </Th> <Th> 24 </Th> <Th> </Th> </Tr> <Tr> <Td> 276 </Td> <Td> 7 </Td> <Td> "Why Try to Change Me Now" </Td> <Td> November 3, 2016 (2016 - 11 - 03) </Td> <Th> 2.1 / 7 </Th> <Th> 7.60 </Th> <Th> 10 </Th> <Th> 19 </Th> <Th> </Th> </Tr> <Tr> <Td> 277 </Td> <Td> 8 </Td> <Td> "The Room Where It Happens" </Td> <Td> November 10, 2016 (2016 - 11 - 10) </Td> <Th> 1.9 / 7 </Th> <Th> 7.25 </Th> <Th> 15 </Th> <Th> 22 </Th> <Th> </Th> </Tr> <Tr> <Td> 278 </Td> <Td> 9 </Td> <Td> "You Haven't Done Nothin"' </Td> <Td> November 17, 2016 (2016 - 11 - 17) </Td> <Th> 2.2 / 8 </Th> <Th> 8.04 </Th> <Th> 10 </Th> <Th> 21 </Th> <Th> </Th> </Tr> <Tr> <Td> 279 </Td> <Td> 10 </Td> <Td> "You Can Look (But You'd Better Not Touch)" </Td> <Td> January 26, 2017 (2017 - 01 - 26) </Td> <Th> 2.6 / 9 </Th> <Th> 9.59 </Th> <Th> </Th> <Th> 6 </Th> <Th> </Th> </Tr> <Tr> <Td> 280 </Td> <Td> 11 </Td> <Td> "Jukebox Hero" </Td> <Td> February 2, 2017 (2017 - 02 - 02) </Td> <Th> 2.3 / 8 </Th> <Th> 8.49 </Th> <Th> </Th> <Th> 8 </Th> <Th> </Th> </Tr> <Tr> <Td> 281 </Td> <Td> 12 </Td> <Td> "None of Your Business" </Td> <Td> February 9, 2017 (2017 - 02 - 09) </Td> <Th> 2.1 / 8 </Th> <Th> 8.46 </Th> <Th> 7 </Th> <Th> 10 </Th> <Th> </Th> </Tr> <Tr> <Td> 282 </Td> <Td> 13 </Td> <Td> "It Only Gets Much Worse" </Td> <Td> February 16, 2017 (2017 - 02 - 16) </Td> <Th> 2.1 / 7 </Th> <Th> 7.68 </Th> <Th> </Th> <Th> 13 </Th> <Th> </Th> </Tr> <Tr> <Td> 283 </Td> <Td> 14 </Td> <Td> "Back Where You Belong" </Td> <Td> February 23, 2017 (2017 - 02 - 23) </Td> <Th> 2.0 / 7 </Th> <Th> 7.71 </Th> <Th> 8 </Th> <Th> 12 </Th> <Th> </Th> </Tr> <Tr> <Td> 284 </Td> <Td> 15 </Td> <Td> "Civil War" </Td> <Td> March 9, 2017 (2017 - 03 - 09) </Td> <Th> 1.9 / 7 </Th> <Th> 7.31 </Th> <Th> 6 </Th> <Th> 18 </Th> <Th> </Th> </Tr> <Tr> <Td> 285 </Td> <Td> 16 </Td> <Td> "Who Is He (And What Is He to You)?" </Td> <Td> March 16, 2017 (2017 - 03 - 16) </Td> <Th> 2.0 / 8 </Th> <Th> 7.90 </Th> <Th> 6 </Th> <Th> 10 </Th> <Th> </Th> </Tr> <Tr> <Td> 286 </Td> <Td> 17 </Td> <Td> "Till I Hear It From You" </Td> <Td> March 23, 2017 (2017 - 03 - 23) </Td> <Th> 1.9 / 7 </Th> <Th> 7.80 </Th> <Th> 9 </Th> <Th> 12 </Th> <Th> </Th> </Tr> <Tr> <Td> 287 </Td> <Td> 18 </Td> <Td> "Be Still, My Soul" </Td> <Td> March 30, 2017 (2017 - 03 - 30) </Td> <Th> 2.0 / 8 </Th> <Th> 7.62 </Th> <Th> 9 </Th> <Th> 16 </Th> <Th> </Th> </Tr> <Tr> <Td> 288 </Td> <Td> 19 </Td> <Td> "What's Inside" </Td> <Td> April 6, 2017 (2017 - 04 - 06) </Td> <Th> 1.7 / 7 </Th> <Th> 7.23 </Th> <Th> 8 </Th> <Th> 17 </Th> <Th> </Th> </Tr> <Tr> <Td> 289 </Td> <Td> 20 </Td> <Td> "In the Air Tonight" </Td> <Td> April 13, 2017 (2017 - 04 - 13) </Td> <Th> 1.8 / 7 </Th> <Th> 7.06 </Th> <Th> </Th> <Th> 12 </Th> <Th> </Th> </Tr> <Tr> <Td> 290 </Td> <Td> 21 </Td> <Td> "Don't Stop Me Now" </Td> <Td> April 27, 2017 (2017 - 04 - 27) </Td> <Th> 1.8 / 7 </Th> <Th> 7.02 </Th> <Th> </Th> <Th> 14 </Th> <Th> </Th> </Tr> <Tr> <Td> 291 </Td> <Td> 22 </Td> <Td> "Leave It Inside" </Td> <Td> May 4, 2017 (2017 - 05 - 04) </Td> <Th> 1.8 / 7 </Th> <Th> 7.09 </Th> <Th> </Th> <Th> 19 </Th> <Th> </Th> </Tr> <Tr> <Td> 292 </Td> <Td> 23 </Td> <Td> "True Colors" </Td> <Td> May 11, 2017 (2017 - 05 - 11) </Td> <Th> 1.8 / 7 </Th> <Th> 7.02 </Th> <Th> </Th> <Th> 18 </Th> <Th> </Th> </Tr> <Tr> <Td> 293 </Td> <Td> 24 </Td> <Td> "Ring of Fire" </Td> <Td> May 18, 2017 (2017 - 05 - 18) </Td> <Th> 2.0 / 8 </Th> <Th> 7.92 </Th> <Th> </Th> <Th> 10 </Th> <Th> </Th> </Tr> </Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Episode </Th> <Th> Air date </Th> <Th> Time slot (EST) </Th> <Th> Rating / Share (18--49) </Th> <Th> Viewers (m) </Th> <Th> 18--49 Rank </Th> <Th> Viewership rank </Th> <Th> Drama rank </Th> </Tr> <Tr> <Td> 270 </Td> <Td> </Td> <Td> "Undo" </Td> <Td> September 22, 2016 (2016 - 09 - 22) </Td> <Td> Thursdays 8: 00 p.m. </Td> <Th> 2.5 / 9 </Th> <Th> 8.75 </Th> <Th> 12 </Th> <Th> 21 </Th> <Th> </Th> </Tr> <Tr> <Td> 271 </Td> <Td> </Td> <Td> "Catastrophe and the Cure" </Td> <Td> September 29, 2016 (2016 - 09 - 29) </Td> <Th> 2.4 / 9 </Th> <Th> 8.41 </Th> <Th> 13 </Th> <Th> 25 </Th> <Th> </Th> </Tr>

When does ben come to grey's anatomy