For hazardous on IRC

gistfile1.txt

r.table("table_name").filter( function(score) {
    return score("scoreboard")("teamPlayerParticipantStats")("externalizedData").map( function(data) {
        return data("summonerName")
    }).contains("some_string")
    .or(
        score("scoreboard")("otherTeamPlayerParticipantStats")("externalizedData").map( function(data) {
            return data("summonerName")
        }).contains("some_string")
    )
})

r.table("test").filter( function(score) {
    return score("scoreboard")("teamPlayerParticipantStats")("externalizedData").map( function(data) {
            return data("summonerName")
        }).coerceTo('array').contains("some_string")
    .or(
        score("scoreboard")("otherTeamPlayerParticipantStats")("externalizedData").map( function(data) {
            return data("summonerName")
        }).coerceTo('array').contains("some_string")
    )
})