Mariano Rivera posed as a pizza delivery man to surprise longtime Athletics employee Julie Vasconcellos by visiting her in the mail room this week.
Vasconcellos has worked in the mail room for 25 years.
Rivera carried in a pizza box and brought Vasconcellos to tears as he thanked her for more than two decades of hard work.
The 43-year-old closer says this is the most creative display of appreciation yet during his farewell tour before he heads into retirement after his 19th major league season.