According to Newsday, multiple clubhouse sources confirmed the incident.
The New York Post later reported Valdespin cursed out Collins and demanded to be placed on the disabled list.
"Everyone gets upset when that happens, but you just need to shut up and pack your bags," an anonymous source told Castillo. "He acted like he was the first guy who ever got sent down,” another source told the Daily News.
Valdespin had a similar reaction last season after teammates played a prank on him in San Francisco for not adhering to the team's travel dress code. This past May, he attracted more attention after showboating a home run in a blow-out, after which he was hit by a pitch and seemingly ignored by teammates. According to the Daily News, "He been suspended for insubordination multiple times in the minor leagues and winter ball."
In response to reports of his recent outburst, Valdespin took to Twitter last night and said:
"Though I try not to get upset about things that are written about me, it's tough for me not to react to the article about me disrespecting my manager. I was very upset with myself for not helping the team when I was given the opportunity to play. I respect my manager organization's decision to send me to Triple-A and am working very hard to become a better player and teammate and will hopefully be back to NY soon to do whatever is needed of me."
Terry Collins said this past weekend that he expects Justin Turner to re-join the team immediately after the All Star break.