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Aledmys Diaz is trying to improve his defense with strobe glasses

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MLB.com’s Jenifer Langosch reports that Cardinals’ shortstop Aledmys Diaz has been sporting a new look around Busch Stadium with a pair of “strobe glasses,” technology-enhanced specs designed to help athletes focus on the ball. Like a strobe light, the lenses of these glasses affect a player’s vision by rapidly changing opacity, giving its wearers the illusion that the objects they see are moving more slowly than normal. Once a player adjusts to the new speed of play, they gain a greater sense of control and are able to time their actions with more precision.

Diaz isn’t the first MLB player to utilize the technology, just the first Cardinals’ player to do so. It’s been tested by Bryce Harper, Corey Brown, Tommy Joseph, Austin Hedges and Joe Mauer, among others around the league, and has been used for everything from refining a catcher’s reflexes behind the plate to tweaking a hitter’s ability to track a pitch. Per Langosch, Diaz has been using the glasses to hone in on the ball during pregame drills, increasing both his confidence and response time on the field and improving his defense at short.

The shortstop has been the focus of some concern this season after seeing a sizable dip in his production at the plate, and his five fielding errors, 0.6 UZR and 0.6 fWAR haven’t helped matters, either. He sustained a minor thumb injury during an at-bat on Friday night, and was left off of the Cardinals’ starting lineup on Saturday, though manager Mike Matheny didn’t rule out his ability to pinch-hit during the series. While the strobe glasses are a good start, Diaz will need more than a pair of specs to match the spotlight-worthy performance he turned out during his rookie season in 2016.

Dallas Keuchel could make season debut on Friday vs. Nationals

Dallas Keuchel
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Braves manager Brian Snitker is hoping recently-signed starter Dallas Keuchel will make his season debut on Friday when the Braves open a 10-game road trip with a three-game set against the Nationals, MLB.com’s Mark Bowman reports. For now, the Braves have not officially named a starter for Friday.

After spending seven months as a free agent, Keuchel finally inked a one-year, $13 million contract with the Braves on June 6. He tossed seven shutout innings with nine strikeouts in his first start with Single-A Rome, then gave up three runs on 11 hits across seven innings for Double-A Mississippi on Saturday.

Last year, his final season with the Astros, Keuchel went 12-11 with a 3.74 ERA and a 153/58 K/BB ratio in 204 2/3 innings. The 31-year-old supposedly worried prospective teams due to his declining strikeout rate.

Keuchel is hoping to continue the Braves’ momentum, as the club has won 9 of its last 10 games and is 12-3 overall in June thus far, building up a 2.5-game lead over the Phillies in the NL East.