Answer by taking a quote from the following article:

The Outfield were an English rock band based in London, England. The band achieved success in the mid-1980s and are best remembered for their hit single, "Your Love". The band's lineup consisted of guitarist John Spinks, vocalist and bassist Tony Lewis, and drummer Alan Jackman. They had an unusual experience for a British band in that they enjoyed commercial success in the US, but never in their homeland.

1987 saw the release of their second album, Bangin'. This album did not achieve the acclaim of Play Deep, but it did spawn a Top 40 single "Since You've Been Gone" (not to be confused with the 1970s Rainbow and Head East hit of the same name) and the minor radio/MTV hit "No Surrender", and the album was certified Gold in the US A US summer tour opening for Night Ranger followed. For the group's third album, 1989's Voices of Babylon, a new producer (David Kahne) and sound was evident. The title track was a Top 25 single and "My Paradise" was a mid-sized album-rock hit, but overall the group's popularity continued to decline. After the Babylon LP, Alan Jackman parted ways with the band and was replaced for a concert tour by Paul Read. Spinks and Lewis continued as a duo, switched labels and began recording Diamond Days for MCA. Playing drums on the disc was session drummer Simon Dawson. The LP, released in 1990, produced a Top 30 US hit, "For You". Quick to follow was "One Hot Country", included on the soundtrack for the 1991 action film If Looks Could Kill. The Outfield returned with 1992's Rockeye. Its leadoff single, "Closer to Me", was a near Top 40 hit, and a second release, "Winning It All", gained some notice due to extensive play during NBC's NBA Finals coverage, NBA Superstars series featuring Larry Bird, the 1992 Barcelona Summer Olympics and the film The Mighty Ducks. Simon Dawson, who played on Rockeye, would eventually become the band's official third member.

Did any of the band members leave during this period?
After the Babylon LP, Alan Jackman parted ways with the band and was replaced for a concert tour by Paul Read.