Answer: els

AnswerCrossword Clue
ELSGolfing Ernie
ELSChicago trains
ELSHe'll defend his Open Championship title in July
ELSSouth African athlete
ELSA llama has two
ELSRunner-up at the 2004 Masters
ELSOverhead rumblers
ELSSubway extensions
ELSTrain lines
ELSAbove-ground trains
ELSRail riders
ELSWindy City wheels
ELSThe PGA's Ernie
ELSErnie on the links
ELSRaised RRs
ELSRaised railroads
ELSTrains overhead
ELSErnie with clubs
ELSGolf's "Big Easy"
ELS1997 U.S. Open winner
elsthe letter l
ELSLoop trains
ELSErnie of the PGA
ELSLoop sights
ELSOverhead city transports
ELSTrains on trestles
ELSTwo-time U.S. Open champ
ELSCab alternatives in Chicago
ELSGolf champ Ernie
ELSLoop features
ELSLoop loopers
ELSDisappearing transports
ELSOverhead lines
ELSSmelly pair?
ELSFairways Ernie
ELSHigh rollers?
ELSLogical ends?
ELSOverhead railways
ELSSome Scrabble tiles
ELSThey loop the Loop