West Notes: Henderson Alvarez, Yadier Alvarez, Tolleson, Dyson

The MRI results on the shoulder of Athletics righty Henderson Alvarez were inconclusive, manager Bob Melvin told reports, including Susan Slusser of the San Francisco Chronicle (Twitter links). They’ll be sent for a closer look by Dr. James Andrews, who performed his surgery. As things stand, then, it’s largely unknown when Alvarez will be able to re-start his rehab process and begin working back toward the big league hill.

Here are a few more notes from out west:

• Dodgers righty Yadier Alvarez is looking good at extended Spring Training, per a recent scouting report from new Fangraphs prospect analyst Eric Longenhagen. The review was glowing, with Longenhagen calling Alvarez one of the game’s most exciting pitching prospects on the basis of his athleticism, smooth mechanics, and high-octane stuff. You’ll want to give the write-up a full read for all the details, but it sounds as if the Dodgers have reason to like their big investment.
• The Rangers have formally moved Shawn Tolleson out of the closer role after his rough outing last night, as Jeff Wilson of the Fort Worth Star-Telegram was among those to report (Twitter links) Tolleson currently owns a 9.20 ERA and has blown three of his last five save opportunities.
• It appears that Sam Dyson will be first in line to take a shot at locking down the 9th inning for the Rangers, though it’s unclear how long a leash he’ll have. He’s worked to a 1.43 ERA with 7.7 K/9 against 1.8 BB/9 in 50 1/3 innings for the Rangers since coming over rather quietly in a trade last summer. With the chance to pad his resume with some saves, he could be in line for a nice payday this winter, when he’ll likely qualify for Super Two status after entering the season with 1.142 years of service on his ledger.