Marcel Siem wants to become a CO₂-neutral golf pro - Golf Sustainable
Marcel Siem - Wikipedia
Indian summer for veteran German Siem - RTHK
Siem narrowly misses Masters spot
Golf: Marcel Siem will endlich in die USA auswandern - WELT
Come for the backstory behind this tour pro's first win since 2014, stay for his animated visor toss | Golf News and Tour Information | GolfDigest.com
Marcel Siem DQ's himself over bizarre rules error at Open de France | GolfMagic
Trophee Hassan: Marcel Siem secured a comfortable victory in Morocco | Golf News | Sky Sports
Marcel Siem claims fifth DP World Tour title by single shot at Hero Indian Open | The Independent
The Open 2021: Marcel Siem never lost hope after losing his game, and now he's back contending in a major | Golf News and Tour Information | GolfDigest.com
Marcel Siem - Golf Australia Magazine - Inside Sport