Kang Jung-jo of the Pittsburgh Pirates singles in a run off Miami Marlins pitcher Jose Urena during the first inning of their game Tuesday in Pittsburgh. Kang, who started at third base and hit fifth in the batting order, went 2-for-3 in the Pirates’ 5-1 victory. The former Nexen Heroes player is hitting .316. in his first year in Major League Baseball. [AP/NEWSIS]
I'm having trouble understanding the phrase singles in a run off.
The word single has two meanings relevant to baseball:
to cause the advance of (a base runner) by a one-base hit.
to cause (a run) to be scored by a one-base hit (often followed by in or home).
I guess #1 is correct in the referenced article.
I'm not sure how single and in a run are related.
Additionally, does off mean against?