AJ Styles is expected to be out of action for at least a few more weeks.
Dave Meltzer reported in the Wrestling Observer Newsletter that the internal injury report on Styles is a back injury, which mirrors what was said on television.
Styles is apparently also dealing with an AC joint (shoulder) injury, based on what he said on his MIXER channel.
They have started a Styles vs. Baron Corbin feud but their matches won’t happen for at least a few weeks because Styles is expected to be out for about a month.
In the meantime, Corbin is advertised to wrestle Seth Rollins for the Universal Championship at Super ShowDown. He is also advertised to wrestle Rollins at Stomping Grounds on June 23rd. Presumably, his feud with Styles will resume after Stomping Grounds.