Yusei Kikuchi's second-half fade with Mariners a result of fatigue, agent Scott Boras says

Newly signed Seattle Mariners pitcher Yusei Kikuchi (L) attends his introductory press conference with his agent Scott Boras at T-Mobile Park in Seattle, Washington, United States, January 3, 2019. Credit: AFLO/Alamy Live

181: Baby It's Cold Outside

Scott boras hi-res stock photography and images - Alamy

Newly signed Seattle Mariners pitcher Yusei Kikuchi (L) attends his introductory press conference with his agent Scott Boras at T-Mobile Park in Seattle, Washington, United States, January 3, 2019. Credit: AFLO/Alamy Live

181: Baby It's Cold Outside

Scott boras hi-res stock photography and images - Alamy

Newly signed Seattle Mariners pitcher Yusei Kikuchi (L) attends his introductory press conference with his agent Scott Boras at T-Mobile Park in Seattle, Washington, United States, January 3, 2019. Credit: AFLO/Alamy Live

Yusei Kikuchi's second-half fade with Mariners a result of fatigue, agent Scott Boras says

Patrick Corbin I'm Not A Headline Guy

Japanese professional baseball pitcher Yusei Kikuchi attends a press conference to announce his joining to Seattle Mariners of Major League Baseball (MLB) with his agent Scott Boras in Seattle City, State of

Newly signed Seattle Mariners pitcher Yusei Kikuchi (L) attends his introductory press conference with his agent Scott Boras at T-Mobile Park in Seattle, Washington, United States, January 3, 2019. Credit: AFLO/Alamy Live

Japanese professional baseball pitcher Yusei Kikuchi attends a press conference to announce his joining to Seattle Mariners of Major League Baseball (MLB) with his agent Scott Boras in Seattle City, State of