Chicago White Sox center fielder Luis Robert Jr. wanted to get better at making plays at the wall. So he and outfield coach Daryl Boston dug into video. Boston showed Robert film of how outfielders Jackie Bradley Jr., Kevin Kiermaier and former Sox Adam Engel approached those situations. “Once he saw it visually, he took it and ran with it,” Boston told the Tribune on Monday at Camden Yards. The results of those sessions were on display in the fourth inning of last week against the Oakland Athletics. Brent Rooker drove a Jesse Scholtens curveball to deep center field. It looked like it was going to be a two-run home run.