Here is a list off all of the defensive ratings that Strat-o-Matic tweeted yesterday on the first day:

AMERICAN LEAGUE

Baltimore – Manny Machado (1 at 3B advanced; 2 in basic)
Boston – Mookie Betts (2 in CF, 3 in RF w/ -1 arm)
Chicago (AL) – Adam Eaton (4 in CF w/ 0 arm)
Cleveland – Lonnie Chisenhall (4 at 3B (3 Basic); 2 in RF w/ -1 arm)
Detroit – JD Martinez (3 in RF (2 basic) w/ -3 arm)
Houston – George Springer (2 in RF, 3 in CF w/ -2 arm)
Kansas City – Ben Zobrist (3 at 2B, 4 at 3B, 3 in LF and RF (Basic 4) w/ a -1 arm)
LA Angels: Mike Trout (1 in CF w/ -1 arm; 17 speed)
Minnesota – Miguel Sano (5 at 3B and 1B)
New York (AL) – Didi Gregorius (1e14 at SS)
Oakland – Marcus Semien (4e38 at SS)
Seattle – Robinson Cano (3 at 2B (2 Basic))
Tampa Bay – Logan Forsythe (2 at 2B and a 3 at 1B and 3B)
Texas – Delino DeShields (3 in LF and CF w/ +1 arm and 4 at 2B)
Toronto – Kevin Pillar (1 in LF and CF and a 2 in RF w/ a -2 arm)

NATIONAL LEAGUE

Arizona – AJ Pollock (1 in CF w/ a -1 arm)
Atlanta – Jace Peterson (2e11 at 2B)
Chicago (NL) – Kris Bryant (3 at 3B and 4 at 1B and all OF spots)
Cincinnati – Eugenio Suarez (3 at ss and 4 at 3B)
Colorado – Carlos Gonzalez (2 in RF w/ -3 arm)
Los Angeles (NL) – Joc Pederson (2 in CF w/ -1 arm)
Miami – Adeiny Hechevarria (1e12 at SS)
Milwaukee – Khris Davis (4 in LF w/ +3 arm)
New York (NL) – Curtis Granderson (2 in RF and 4 in CF w/ +2 arm)
Philadelphia – Maikel Franco (2 at 3B, 3 at 1B)
Pittsburgh – Jung Ho Kang (3 at 3B, 4 at SS)
San Diego – Justin Upton (3 in LF w/ +1 arm); Melvin Upton (2 in CF w/ -1 arm)
San Francisco – Buster Posey (1 at C w/ -2 arm and 2 at 1B)
St. Louis – Kolten Wong (2 at 2B and B base stealer)
Washington – Danny Espinosa (1 at 2B, 2 at 3B, 3 at SS and 1B, and 4 in LF; arm rating not given)