Chandler allowed three runs on five hits and three walks while striking out four across five innings in a no-decision against the Giants on Wednesday.
Rainey cleared waivers Wednesday and was sent outright to Triple-A Toledo.
Bachar will serve as the opening pitcher in Thursday's game against the Giants, Danny Demilio of PittsburghBaseballNow.com reports.
Torkelson is not in the starting lineup for Wednesday's game against the Twins.
Dingler is not in the starting lineup for Wednesday's game against the Twins.
Gonzalez is not in the lineup for Wednesday's game versus the Giants.
Sears is scheduled to start the second game of Friday's doubleheader against the Guardians, Evan Woodbery of MLive.com reports.
Lowe went 4-for-6 with a solo home run and two additional runs scored in Tuesday's wild 13-12 win over the Giants.
Gonzales went 3-for-5 with a double, a run scored and an RBI in Tuesday's 13-12 win over the Giants.
Montgomery (6-3) picked up the win in Tuesday's wild 13-12 victory over the Giants, giving up two hits in a scoreless ninth inning. He didn't walk or strike out a batter.
| PITCHING | INN | W | K | HA | ER | BBI | |
| A. Heaney(G1) | Andrew Heaney(G1) | 5.7 | 0.15 | 4.6 | 4.7 | 2.0 | 1.6 |
| Relievers | Relievers | 3.3 | 0.17 | 3.2 | 3.0 | 1.7 | 1.4 |
| HITTING | H | R | RBI | TB | BB | SB | |
| N. Gonzales(G1) | Nick Gonzales(G1) | 0.71 | 0.29 | 0.28 | 1.12 | 0.14 | 0.03 |
| A. McCutchen(G1) | Andrew McCutchen(G1) | 0.72 | 0.28 | 0.31 | 1.13 | 0.28 | 0.02 |
| J. Bart(G1) | Joey Bart(G1) | 0.77 | 0.26 | 0.33 | 1.27 | 0.27 | 0.01 |
| A. Canario(G1) | Alexander Canario(G1) | 0.57 | 0.26 | 0.25 | 0.96 | 0.18 | 0.05 |
| K. Hayes(G1) | Ke`Bryan Hayes(G1) | 0.92 | 0.33 | 0.37 | 1.3 | 0.17 | 0.07 |
| I. Kiner-Falefa(G1) | Isiah Kiner-Falefa(G1) | 0.7 | 0.3 | 0.2 | 0.84 | 0.12 | 0.06 |
| J. Triolo(G1) | Jared Triolo(G1) | 0.5 | 0.22 | 0.19 | 0.71 | 0.18 | 0.07 |
| T. Pham(G1) | Thomas Pham(G1) | 0.55 | 0.25 | 0.21 | 0.87 | 0.21 | 0.06 |
| B. Cook(G1) | Billy Cook(G1) | 0.52 | 0.22 | 0.21 | 0.8 | 0.15 | 0.05 |
KEY PLAYER INJURIESNo new major injuries to report NOT PROJECTED TO START:Brett Sullivan Batting order and lineup confirmed and provided by Rotowire. | |||||||
| PITCHING |
| Andrew Heaney(G1) |
| Relievers |
| HITTING |
| Nick Gonzales(G1) |
| Andrew McCutchen(G1) |
| Joey Bart(G1) |
| Alexander Canario(G1) |
| Ke`Bryan Hayes(G1) |
| Isiah Kiner-Falefa(G1) |
| Jared Triolo(G1) |
| Thomas Pham(G1) |
| Billy Cook(G1) |
| INN | W | K | HA | ER | BBI |
| 5.7 | 0.15 | 4.6 | 4.7 | 2.0 | 1.6 |
| 3.3 | 0.17 | 3.2 | 3.0 | 1.7 | 1.4 |
| H | R | RBI | TB | BB | SB |
| 0.71 | 0.29 | 0.28 | 1.12 | 0.14 | 0.03 |
| 0.72 | 0.28 | 0.31 | 1.13 | 0.28 | 0.02 |
| 0.77 | 0.26 | 0.33 | 1.27 | 0.27 | 0.01 |
| 0.57 | 0.26 | 0.25 | 0.96 | 0.18 | 0.05 |
| 0.92 | 0.33 | 0.37 | 1.3 | 0.17 | 0.07 |
| 0.7 | 0.3 | 0.2 | 0.84 | 0.12 | 0.06 |
| 0.5 | 0.22 | 0.19 | 0.71 | 0.18 | 0.07 |
| 0.55 | 0.25 | 0.21 | 0.87 | 0.21 | 0.06 |
| 0.52 | 0.22 | 0.21 | 0.8 | 0.15 | 0.05 |
