Question: What Stanbic Bank 20 Series star retired in March 2017?
Sentence (from "Stanbic Bank 20 Series"): Recently, the tournament has risen in profile with some high-quality cricket, and the attraction of major international stars such as Brian Lara, Ryan Sidebottom, Chris Gayle, Shaun Tait, Ian Harvey, and Dirk Nannes.
Relevant evidence: Yes