<Tr> <Th> First aired </Th> <Th> Last aired </Th> <Th> Rank </Th> <Th> Average viewership (in millions) </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 18 </Td> <Td_colspan="1"> September 20, 2016 (2016 - 09 - 20) </Td> <Td> March 14, 2017 (2017 - 03 - 14) </Td> <Td> 6 </Td> <Td> 14.70 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 18 </Td> <Td_colspan="1"> September 26, 2017 (2017 - 09 - 26) </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> TBA </Td> </Tr> <Ul> <Li> Milo Ventimiglia as Jack Pearson: Rebecca's husband, and Kate, Kevin, & Randall's father . </Li> <Li> Mandy Moore as Rebecca Pearson (née Malone): Jack's wife, and Kate, Kevin, & Randall's mother . </Li> <Li> Sterling K. Brown as Randall Pearson: Jack & Rebecca's son, and Kate & Kevin's brother . Also played by Niles Fitch (age 15) and Lonnie Chavis (ages 8--10). </Li> <Li> Chrissy Metz as Kate Pearson: Jack & Rebecca's daughter, and Kevin & Randall's sister . Also played by Hannah Zeile (age 15) and Mackenzie Hancsicsak (ages 8--10). </Li> <Li> Justin Hartley as Kevin Pearson: Jack & Rebecca's son, and Kate & Randall's brother . Also played by Logan Shroyer (age 15) and Parker Bates (ages 8--10). </Li> <Li> Susan Kelechi Watson as Beth Pearson: Randall's wife, and mother of Tess and Annie . </Li> <Li> Chris Sullivan as Toby Damon: Kate's fiancé . </Li> <Li> Ron Cephas Jones as William H. "Shakespeare" Hill: Randall's biological father . Also played by Jermel Nakia as a young adult . </Li> <Li> Jon Huertas as Miguel Rivas: Jack's best friend and Rebecca's second husband . (recurring season 1; main season 2--present) </Li> <Li> Alexandra Breckenridge as Sophie: Kate's childhood best friend as well as Kevin's childhood love and ex-wife . Also played by Amanda Leighton (age 15) and Sophia Coto (age 10). (recurring season 1; main season 2--present) </Li> <Li> Eris Baker as Tess Pearson: Randall and Beth's older daughter . (recurring season 1; main season 2--present) </Li> <Li> Faithe Herman as Annie Pearson: Randall and Beth's younger daughter . (recurring season 1; main season 2--present) </Li> </Ul>

Who is jacks father on this is us