For Shaw, 25, this is his second career major league stint. The left-handed batter was recalled on May 8 and made his major league debut that night in Toronto, going 0-for-2 with a walk as Boston's starting first baseman, before being optioned back to Pawtucket following the game. In 56 contests for the PawSox this season, he has hit .256 (54-for-211) with eight doubles, two triples, five home runs, 26 RBI, and 22 walks, appearing in games at third base (30 games), first base (22), and left field (3). In 12 games since May 31, he ranks fourth among International League leaders with a .383 (18-for-47) batting average. Signed by the Red Sox as a ninth-round selection in the 2011 June Draft, Shaw has hit .262 (477-for-1,820) with 116 doubles, 11 triples, 69 home runs, 276 RBI, 272 walks, and a .362 on-base percentage in 500 games over parts of five seasons in the minor leagues.
Barnes, 24, took the loss in yesterday's 11-inning game against the Blue Jays, allowing one run while pitching the final two innings. He has appeared in 15 games for the Red Sox this season over two major league stints, going 2-2 with a 4.24 ERA (8 ER/17.0 IP) and 13 strikeouts. In four outings for the PawSox this season, including three starts, he has no record with 14 strikeouts in 13.0 innings and a 4.15 ERA (6 ER). A native of Connecticut, Barnes made his major league debut as a September call-up with Boston last season and owns a 4.15 ERA (12 ER/26.0 IP) in 20 career big league games, all out of the bullpen. Signed by the Red Sox as a first-round selection in the 2011 June Draft, he is 21-24 with a 3.66 ERA (152 ER) and 392 strikeouts in 373.2 innings pitched over 77 career minor league outings (75 starts) from 2012-15.