Obviously these were distributed before the publication date as the mention of the game Three of the Great Match on September 10th is under the heading "Matches to Come" along with an unrelated game on September 9th and several games after the publication date. So a brief mention of the great match but that's not all. Box scores from a number of games including 2 games featuring Niagara (of Brooklyn) and an infielder by the name of Creighton.

Jim Creighton Wikipedia

Jim Creighton is generally considered the first superstar of baseball. At that time in bseball the job of the pitcher was to lob the ball to the batter so that he could hit it. Trying to get the batter out with the pitched ball wasn't really an outcome that was desired, the game awas about hitting and fielding, so much so that throwing a curve ball (monitored by making sure pitchers didn't "break their wrist") was forbidden. You also were supposed to "bowl" the ball underhand Creighton started as opposed to "throwing" Accounts differ but somehow Creighton "bowled" a pitch that was nearly unhittable. Their are accounts of the great speed oh his pitches but also some believe that he had an undetectable method of throwing a curevball.

In those days there was no such thing as a ball or non-swinging strike. So batters took to simply trying to wait Creighton out taking dozens of pitchs in a time at plate. So much so that eventually called strikes were implemented, so Creighton is fairly directly responsible for one of the most fundamental events in the game as we know it!Interstingly while Wikipedia has him listed as a second baseman, these two games have him listed at third base

This paper is on stock fairly akin to newsprint today. The cover is nearly detached and the pages along the fold are separating, hanging on by a tiny bit of paper. The baseball content is in the interior of the paper on pages 4 and 5. It is lightly yellowed and has some wear on the fold but is fairly clean and very easily legible. This, and all the other Porter's Spirit of the Times, were stiched into a bound volume and so have holes from thos stitches on the soine, which also accounts for the damage causing pages to separate from each other along the spine fold.