That's because he's going from an injury-ridden, last-place Texas club to an A's team that's within range of its third consecutive American League West title.
Count Soto among the army of Rangers players who hit the disabled list this year, having needed surgery on his right knee in Spring Training to repair a torn meniscus. He returned in July, only to suffer a groin injury within days and return to the DL.
"At this point," he said, "I feel great."
When Soto catches starter Jason Hammel in Houston on Tuesday, it will mark just his 11th game of the year. The rest of it has been spent watching from the sidelines, where he's kept an eye on the A's.
"They always play hard, never take an inning off, they're always coming after you," he said. "They just find a way to get on, find a way to get runs, find a way to win. Very impressive."
Soto also raved of the A's pitching staff, saying, "It's the core of this great team. It's going to be special working with them."
Upon Soto's arrival, Jaso was officially placed on the seven-day concussion DL, as expected.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.