Mark Kotsay shares how Athletics pitcher Mason Barnett has grown this season | NBC Sports CA

Athletics manager Mark Kotsay speaks to reporters before the team’s game against the Boston Red Sox on Thursday night at Sutter Health Park. #MarkKotsay #Athletics #BostonRedSox #RedSox #Boston #AthleticsPressConference #PressConference #MLB #Like #Comment #Subscribe #NBCSportsCalifornia CONNECT: ✔️ Subscribe to NBC Sports Bay Area & California: bit.ly/3AQknYc ✔️ Subscribe to our podcasts: https://www.nbcsports.com/bayarea/pod... ✔️ Stream the games at: ➡️ https://nbcsports.app.link/san_franci... ➡️ https://nbcsports.app.link/oakland_at... ➡️ https://nbcsports.app.link/golden_sta... ➡️ https://nbcsports.app.link/sacramento... ➡️ https://nbcsports.app.link/san_jose_s... ➡️ https://nbcsports.app.link/san_franci... NBC Sports Bay Area & California on social media: ► Our website: https://www.nbcsports.com/bayarea/ ► Instagram: / nbcsauthentic ► Like us on Facebook: / nbcsauthentic ► Follow us on Twitter: / nbcsauthentic...