Update #2 (4:23 PM EDT): The third player going to the Rays is Michael Santos, per Jeff Passan of Yahoo Sports. Santos was rated #24 in the Giants’ system by MLB Pipeline.
Update (4:21 PM EDT): The Rays are also expected to receive third baseman Matt Duffy and minor league infielder Lucius Fox. MLB Pipeline rated Fox as the Giants’ fourth-best prospect.
Duffy, 25, finished second in National League Rookie of the Year Award balloting last season, putting up a .762 OPS. He hasn’t been the same this year, putting up a meager .253/.313/.358 batting line with 17 extra-base hits, 21 RBI, and 32 runs scored in 286 plate appearances. Duffy has been sidelined since June 20 with a strained left Achilles.
Fox, 19, was rated the fourth-best prospect in the Giants’ system. In his professional debut with Single-A Augusta, he has hit .207/.305/.277 with 25 stolen bases in 331 plate appearances.
Moore, 27, posted a 4.08 ERA wtih a 109/40 K/BB ratio in 130 innings over 21 starts for the Rays this season. The lefty returned last year after recovering from Tommy John surgery.
Moore is earning $5 million this season and has club options for each of the next three seasons worth $7 million ($2.5 million buyout), $9 million ($1 million buyout), and $10 million ($750,000 buyout), respectively.