Observations from Mets spring training on Tuesday:

Bombs away

Francisco Alvarez launched a 439-foot homer to center field for the Mets in their 6-1 exhibition victory over the Cardinals at Clover Park.

The blast was Alvarez’s first this spring.

Slow spring

Marcus Semien went 0-for-3 and is hitting .190 in the Grapefruit League.

The veteran second baseman has been batting leadoff in Francisco Lindor’s absence.

Caught my eye

Semien won an ABS challenge, getting a strike overturned to a ball. Alvarez and David Peterson both lost challenges attempting to get a ball overturned to a strike.

Wednesday’s schedule

The Mets have an off-day and resume the Grapefruit League season Thursday against the Cardinals in Jupiter, Fla.

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