Monsels grew up in Suriname, he attended Mulo there, came to the Netherlands in 1971 to compete in  the Kingdom Games, and remained in the Netherlands to undergo training as a technical specialist.
In Paramaribo, Monsels was a member of the 'Gazelle' athletics association.

In 1971 Monsels was Surinamese champion in the 100 metres and 200 m at both the senior level (11.0 seconds and 22.3 seconds) and the junior level (11.0 and 22.5).

Between 1971 and 1983 Monsels won seven Dutch sprint championships in the 60 metres (indoor) and the 100 and 200 metres (outdoor).
In 1972 and 1976 he competed in the Olympic Games, representing Suriname, reaching the second round of the 100 metres and 200 metres on both occasions.
In 1982 he represented Suriname at the Central American and Caribbean Games in Havana.

As late as 1990, Monsels competed in the Netherlands national indoor athletics championships in The Hague, finishing third in the 60 metres with a time of 6.89 seconds, behind Emiel Mellaard and Frank Perri.
Monsels grew up in Suriname, he attended Mulo there, came to the Netherlands in 1971 to compete in  the Kingdom Games, and remained in the Netherlands to undergo training as a technical specialist. In Paramaribo, Monsels was a member of the 'Gazelle' athletics association.
In 1971 Monsels was Surinamese champion in the 100 metres and 200 m at both the senior level (11.0 seconds and 22.3 seconds) and the junior level (11.0 and 22.5). 
Between 1971 and 1983 Monsels won seven Dutch sprint championships in the 60 metres (indoor) and the 100 and 200 metres (outdoor). In 1972 and 1976 he competed in the Olympic Games, representing Suriname, reaching the second round of the 100 metres and 200 metres on both occasions. In 1982 he represented Suriname at the Central American and Caribbean Games in Havana.
As late as 1990, Monsels competed in the Netherlands national indoor athletics championships in The Hague, finishing third in the 60 metres with a time of 6.89 seconds, behind Emiel Mellaard and Frank Perri.
Sammy Monsels