Jon Matlack vs Bill Singer: Career Stats Comparison
Jon Matlack (1971–1983) and Bill Singer (1964–1977) — breaking in during the 1970s and the 1960s respectively, so they pitched against very different hitting environments. Jon Matlack compiled 125 wins and 1,516 strikeouts; Bill Singer put up 118 wins and 1,515 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Jon Matlack
Bill Singer
Career Stats Side-by-Side
Every cell below is a career total or career rate. Cells highlighted in green mark the player who leads that line. For pitchers, lower ERA, WHIP, and BB/9 lead; higher K/9 leads.
| Statistic | Jon Matlack | Bill Singer |
|---|---|---|
| Wins | 125 | 118 |
| Losses | 126 | 127 |
| Games | 361 | 322 |
| Games Started | 318 | 308 |
| Complete Games | 97 | 94 |
| Shutouts | 30 | 24 |
| Saves | 3 | 2 |
| Strikeouts | 1,516 | 1,515 |
| Walks | 638 | 781 |
| Hits Allowed | 2,276 | 1,952 |
| Home Runs Allowed | 161 | 132 |
| Innings Pitched | 2,363 | 2,174 |
| ERA | 3.18 | 3.39 |
| WHIP | 1.23 | 1.26 |
| K/9 | 5.77 | 6.27 |
| BB/9 | 2.43 | 3.23 |
PIV Comparison
By PIV (Player Impact Value), Jon Matlack outpaces Bill Singer 38,811 to 24,349 — a gap driven primarily by per-season impact (2,985 vs 1,623 per year). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Jon Matlack — top 3 seasons by ERA (lower is better)
Bill Singer — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Jon Matlack leads in wins, strikeouts, ERA, and WHIP, while Bill Singer owns K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Jon Matlack. PIV agrees: Jon Matlack grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.