| 2025-10-10 | The Yankees and the Red Sox, e.g. |
| 2024-05-23 | Two in a row? |
| 2023-03-26 | Hostile parties |
| 2022-11-27 | Duel personalities? |
| 2022-10-02 | Adversaries |
| 2021-10-16 | Opposing forces |
| 2021-04-02 | Rivals |
| 2021-02-15 | Friends' opposite |
| 2019-07-19 | The other side |
| 2019-06-04 | Enemies |
| 2018-05-31 | Opposite sides |
| 2017-04-08 | G.I. Joe and Cobra Commander, e.g. |
| 2016-02-28 | Anti bodies? |
| 2015-12-27 | The Jedi and the Sith, e.g. |
| 2013-08-18 | Two-Face and the Riddler, to Batman |
| 2013-07-07 | They're not on your side |
| 2009-07-26 | Achilles and Hector |
| 2009-07-06 | The North and the South, in the Civil War |
| 2009-07-05 | Nemeses |
| 2007-11-23 | They're not for you |
| 2007-09-28 | They're against each other |
| 2007-07-02 | Enemies |
| 2006-04-02 | Grendel and Beowulf |
| 2006-01-19 | Us and them, maybe |
| 2005-08-03 | The Blue and the Gray, once |
| 2002-06-09 | Adversaries |
| 2001-11-12 | Rivals |
| 1999-11-15 | Adversaries |
| 1999-08-01 | Rivals |
| 1995-01-18 | Opposing sides |
| 1995-01-13 | Antagonists |
| 1994-11-09 | Opposing sides |
| 1994-07-02 | Rivals |