Cubs roster breakdown at the All-Star break

Jake Arrieta: 1.303 WHIP, 13 wild pitches. Primed for strong second half, free agent drive.

24 home runs allowed, 0-9 when Cubs score five runs or fewer. Could be last hurrah for owner of three World Series rings.

1-2, 3.76 ERA at home; 0-4, 3.72 on road. Won’t be fazed if he returns as second lefty in pen.   (Chris Sweda / Chicago Tribune)

Opponents batting .205 with RISP. Arm should be fresh for second-half run.

1.406 WHIP, 27 walks in 531/3 innings. Could be odd man out once Hendricks returns.

16-for-16 in save chances, 1 HR in 30 innings. Tough to match first half but will be key if Cubs reach playoffs.

LH hitters batting .086, all opponents .082 in night games. Tough to match first half; has shown occasional bouts of wildness.

RH hitters batting .169, LH batters .240, 1 HR allowed in 29 2/3 innings. Veteran could fade with larger workload in second half.

LH batters batting .170, unscored upon in nine of last 11 outings. Ready to carry heavier workload.

Opponents batted .051 in June. Might regain middle-relief role with ability to throw multiple innings.

47 strikeouts in 38 2/3 innings, RH hitters batting .194. Must be careful not to tax only lefty reliever.

7.20 ERA in May, allowing .968 OPS with RISP. Can’t be this bad.

RH hitters batting .323, didn’t allow a run in last three outings. Auditioning for 2018 spot.

.237, 2 HR, 13 RBIs at home; .288, 9 HR, 28 RBIs on road. Needs to cut down on throwing errors.

.341, 8 HR, 54 RBIs at Triple-A Iowa. Could be used as trade fodder if Cubs land left-handed-hitting backup.

.310, 9 HR, 27 RBIs at home; .210, 11 HR, 29 RBIs on road. Cubs need strong second half from strong clubhouse presence.

.382 vs. LH starters, .207 vs. RH starters; .291 at home, .224 on road. Needs to hit to all fields.

.149 vs. LH pitchers, .241 at leadoff, .182 at cleanup. Should be sharper with more rest.

.163 at home, .284 on road. Overdue for hot streak that offense desperately needs.

.213 with RISP, .399 OBP. Friday’s power surge fuels optimism for second half.

385 OBP, 5-for-16 as pinch hitter. Will play more prominent role off bench with Jon Jay playing more regularly.

1 HR shy of 2016 total. Big second half could offset team’s struggles vs. RHPs.

.385 in April, .311 in June, .393 as pinch hitter. Cubs can’t afford to lose him to injury.

.352 vs. LHP, .241 vs. RHP, .409 as PH. Deserves more playing time, but where?

.455 on first pitch, .349 batting fifth, 47 strikeouts in 141 AB vs. RHP. Fearless instincts serve him well.

.185 vs. RHP, .155 on road, 12 of 13 HRs vs. RHP. Will get DH opportunities this month.