Fans of a certain age who root for the Giants, looking ahead to this Sunday’s playoff game, will smile, wince and rejoice as they think back to previous postseason matchups against the Vikings.

There are only three to review. The first was fairly routine and also historically significant. The second was definitely galling. The third was undeniably enthralling.

Does any of this reminiscing have anything to do with this Giants team and this upcoming game? Inside the building, no. Head coach Brian Daboll needs to focus on only one aspect of the Giants-Vikings past to keep his team laser-focused: the very recent past. On Christmas Eve, the Giants and Vikings engaged in a down-to-the-wire battle inside U.S. Bank Stadium, which the Vikings won, 27-24, on Greg Joseph’s 61-yard field goal as time expired.

The Giants left Minneapolis bemoaning three critical mistakes — a fumble by rookie tight end Daniel Bellinger, a rare interception thrown by Daniel Jones and a blocked punt — that compromised their upset chances. The Giants left town believing they might see the Vikings again and confident that if they did, they could finish the job the next time around.