The specific statistics (.143 BA vs 5th, .211 OBP vs 6th, .248 SLG vs 9th, 2.67 ERA) are presented in the claim but are not independently corroborated by multiple sources. While web search results mention his 2.67 ERA in a doubleheader context, the specific per-opponent stats are not found in the provided evidence.

The specific statistics (.348 AVG vs 88th, .375 OBP vs 78th, .609 SLG vs 91st, 10.80 ERA) are presented in the claim but are not independently corroborated by multiple sources. The evidence provided is general baseball knowledge or unrelated to these specific metrics.

While Matt Wallner is mentioned in connection with hitting in the sixth inning in the context of the Twins/Mets, the specific detail that he recorded the *first* hit for Minnesota in the sixth inning, leading to the order turning over, is not corroborated by multiple independent sources. The evidence confirms Wallner hit in the sixth, but not the specific sequence described.

The web search results indicate that Nolan McLean is scheduled for a doubleheader against the Rockies at Citi Field, which supports the general premise of him pitching in a doubleheader setting. However, the specific claim that he is pitching *Game 1* is not confirmed by multiple sources, though the context suggests it.