Eiland worked with Burnett on keeping his left side closed and getting "all [his] energy going toward home plate."
"It's not like I gave him anything new today," Eiland said. "[Bullpen coach] Mike Harkey was telling him the same thing."
Burnett's woes began the same day Eiland left the team on June 4 in Toronto. Since then, the right-hander is 0-5 with an 11.35 ERA. Eiland returned from his 25-day absence on Tuesday.