[1] He made his professional debut with the rookie-level Arizona League Diamondbacks in 2014, going 3–4 with a 4.39 ERA and 34 strikeouts in 41 innings.

Takahashi split the 2016 season between the Low-A Hillsboro Hops, Single-A Kane County Cougars, and High-A Visalia Rawhide, combining to go 6–4 with a 2.81 ERA and 67 strikeouts over 83+1⁄3 innings.

He split the 2017 season between Kane County and Visalia, but struggled to a 7–12 record and 5.14 ERA with 107 strikeouts over 126 innings.

[2] His 2018 season was split between Visalia and the Double-A Jackson Generals, for whom he accumulated a 6–6 record with a 4.03 ERA and 130 strikeouts in 120+2⁄3 innings pitched.

Takahashi did not appear for Arizona in 2020, and did not play in any games for the organization due to the cancellation of the minor league season because of the COVID-19 pandemic.

In 2023, Takahashi made 28 appearances out of the bullpen for Seibu, registering a 3.00 ERA with 27 strikeouts across 36 innings of work.