Joe made his professional debut in 2015 with the West Virginia Power, and batted .245/.366/.303 on the year.[3] He spent the 2016 season in High-A with the Bradenton Marauders, slashing .277/.351/.392 in 107 games, while playing third base. After the 2016 season, he played in the Arizona Fall League, where he batted .204/.371/.347 for Surprise.[4][5] Joe was assigned to the Double-A Altoona Curve to begin the 2017 season, and with them he batted 240/.338/.380.[4]
On September 25, 2017, Joe was traded to the Los Angeles Dodgers in exchange for international bonus pool money.[7][8] He split the 2018 season between the Double-A Tulsa Drillers and the Triple-A Oklahoma City Dodgers, slashing .299/.408/.527 with career-highs in home runs (17) and RBI (55).
Joe cleared waivers and was returned to the Dodgers on April 13, 2019.[12] Joe spent the remainder of the season in Triple–A with Oklahoma City, and batted .300/.427/.503 with 15 home runs and 68 RBI.[13] Joe opted out of the 2020 season after being diagnosed with testicular cancer. The season was later cancelled as a result of the COVID-19 pandemic.[14] Joe became a free agent on November 2, 2020.[15]
Colorado Rockies
On November 20, 2020, Joe signed a minor league contract with the Colorado Rockies organization.[16] On May 7, 2021, Joe was selected to the active roster.[17] Joe played first base while also playing left field, finishing the 2021 season hitting .285 with eight home runs and 35 RBI in 63 games.
In 2022 Joe batted .238/.338/.359 with seven home runs and 28 RBIs in 404 at bats.[4]
Pittsburgh Pirates
On December 18, 2022, Joe was traded to the Pittsburgh Pirates in exchange for Nick Garcia.[18]
Personal life
Joe's parents are Mee-Sun and Peter Joe.[19][20] He is of Chinese heritage. His grandparents emigrated from China: his father's family moved to Connecticut and his mother’s family moved to New York. After his parents married, they moved to Poway, California, a suburb of San Diego. His family owned and operated two restaurants in San Diego.[20]
Joe and his wife Kylie reside in Arizona.[21][22] The couple had met at the University of San Diego, where Connor played baseball and Kylie played softball.[23] They married in November 2018.[24] Their daughter was born in December 2022.[23]
On March 18, 2020, Joe announced he had undergone surgery for testicular cancer and was in his recovery process.[25] He was declared cancer free on July 20, 2020.[20][26]