Hernández's defense has increasingly become a matter of concern for manager Dave Roberts and Monday's loss was followed by a meeting involving Roberts; Andrew Friedman, the Dodgers president of baseball operations; and Betts, who has expressed a willingness to move back to right field where he was a six-time gold glove winner.
Hernández is ranked 64 among National League right fielders with a defensive WAR of -0.4 and his two errors are tied for fourth-most in the league.
"He's got to get better out there. There's just no way to put it," Roberts said after Monday's game of Hernández. "It's not a lack of effort. But, you know, we've just got to kind of get better. We do."
Betts, meanwhile, twice led the American League in fielding average and putouts as the Boston Red Sox's right fielder. But he's played full time at shortstop full time this season.
"Defense is a big part of postseason baseball and winning baseball," Roberts said.
Betts' move to the infield has arguably weakened the Dodgers in two ways: Hernández's defense and Betts' offense. Playing the infield, especially shortstop, is far more taxing mentally than playing in the outfield and Betts is slashing a career-low .242/.312/.370 this season.
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Moving Betts back to right field would likely mean using Alex Freeland or Miguel Rojas at shortstop, at least in the short term. Freeland played nearly 300 games at shortstop in the minors while Rojas has played more than 940 games there in the majors.
Hernández, second on the team with 74 RBIs and tied for second with 20 home runs, would then move to left field -- a less-demanding position defensively than right field -- in place of Michael Conforto, whose .190 batting average is the worst in the majors among players with at least 300 at-bats.
Moving Betts back to the outfielder could be easier for Roberts when utility players Tommy Edman, Hyeseong Kim and Kiké Hernández return from the injured list, giving the manager more depth and flexibility. Kim, who will begin a rehab assignment this week, is the furthest along and could be back by early next week.